{"id":243319,"date":"2026-04-07T12:08:28","date_gmt":"2026-04-07T10:08:28","guid":{"rendered":"https:\/\/drain-master.de\/2026\/04\/07\/optimal-cannabis-ph-value-the-guide-for-soil-coco-hydro\/"},"modified":"2026-04-13T17:12:25","modified_gmt":"2026-04-13T15:12:25","slug":"optimal-cannabis-ph-value-the-guide-for-soil-coco-hydro","status":"publish","type":"post","link":"https:\/\/drain-master.de\/en\/2026\/04\/07\/optimal-cannabis-ph-value-the-guide-for-soil-coco-hydro\/","title":{"rendered":"Optimal Cannabis pH Value &#8211; The Guide for Soil, Coco &amp; Hydro"},"content":{"rendered":"<article>\n<p class=\"intro\">What your substrate really needs.<\/p>\n<p>Adjusting the  <strong>Optimal Cannabis pH Value<\/strong>  is perhaps the most important skill that distinguishes an ambitious home gardener from a true professional. You can have the best genetics, the strongest light, and the most expensive fertilizer \u2013 if the pH value is not right, your plants will still show deficiency symptoms. It is the foundation on which everything else is built. Many growers only focus on the pH value of the irrigation water, but the real magic lies in understanding and controlling what happens in the substrate itself.   <\/p>\n<div class=\"woocommerce columns-1 \"><ul class=\"products columns-1\">\n<li class=\"product type-product post-2267 status-publish first instock product_cat-coaster product_cat-garden-supplies has-post-thumbnail taxable shipping-taxable purchasable product-type-simple\">\n\t<a href=\"https:\/\/drain-master.de\/en\/product\/drainmaster-drip-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><div class=\"woocommerce-image__wrapper\"><a href=\"https:\/\/drain-master.de\/en\/product\/drainmaster-drip-stand\/\" title=\"DrainMaster incl. tub (Set size configurable)\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><div class=\"shoptimizer-plp-carousel-container\"><div class=\"shoptimizer-plp-image-wrapper\"><img fetchpriority=\"high\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"DrainMaster Single set\" srcset=\"https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-300x300.jpg 300w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-1019x1024.jpg 1019w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-768x771.jpg 768w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-1529x1536.jpg 1529w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-990x994.jpg 990w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-441x443.jpg 441w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-100x100.jpg 100w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-150x151.jpg 150w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2.jpg 1991w\" sizes=\"(max-width: 360px) 147px, (max-width: 300px) 100vw, 300px\" \/>\t\t\t\n\t<\/div><\/div><\/a><\/div><div class=\"woocommerce-card__header\">\t\t\t\t\t<p class=\"product__categories\"><a href=\"https:\/\/drain-master.de\/en\/product-category\/garden-supplies\/coaster\/\" rel=\"tag\">Coaster<\/a>, <a href=\"https:\/\/drain-master.de\/en\/product-category\/garden-supplies\/\" rel=\"tag\">Garden supplies<\/a><\/p>\t\t\t\t<div class=\"woocommerce-loop-product__title\"><a tabindex=\"0\" href=\"https:\/\/drain-master.de\/en\/product\/drainmaster-drip-stand\/\" aria-label=\"DrainMaster incl. tub (Set size configurable)\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">DrainMaster incl. tub (Set size configurable)<\/a><\/div><\/a><p class=\"price\"><span class=\"woocommerce-Price-amount amount\"><bdi>24,99\u00a0<span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span><\/bdi><\/span><\/p><\/a><a href=\"\/en\/wp-json\/wp\/v2\/posts\/243319?add-to-cart=2267\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2267\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2267\" data-product_sku=\"DM-01\" aria-label=\"Add to cart: \u201cDrainMaster incl. tub (Set size configurable)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDrainMaster incl. tub (Set size configurable)\u201d has been added to your cart\" role=\"button\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2267\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t<input type=\"hidden\" class=\"pmwProductId\" data-id=\"2267\">\n\t\t\t\t\t<script data-cfasync=\"false\">\n\t\t\t(window.pmwDataLayer = window.pmwDataLayer || {}).products                = window.pmwDataLayer.products || {};\n\t\t\twindow.pmwDataLayer.products[2267] = {\"id\":\"2267\",\"sku\":\"DM-01\",\"price\":24.99,\"brand\":\"\",\"quantity\":1,\"dyn_r_ids\":{\"post_id\":\"2267\",\"sku\":\"DM-01\",\"gpf\":\"woocommerce_gpf_2267\",\"gla\":\"gla_2267\"},\"is_variable\":false,\"type\":\"simple\",\"name\":\"DrainMaster incl. tub (Set size configurable)\",\"category\":[\"Coaster\",\"Garden supplies\"],\"is_variation\":false};\n\t\t\t\t\twindow.pmw_product_position = window.pmw_product_position || 1;\n\t\twindow.pmwDataLayer.products[2267]['position'] = window.pmw_product_position++;\n\t\t\t\t<\/script>\n\t\t<\/div><\/li>\n<\/ul>\n<\/div>\n<h2>Why the Wrong pH Value Starves Your Plants<\/h2>\n<p>Imagine your plant sitting at a richly set table but unable to eat. This is exactly what happens with an incorrect pH value. It\u2019s frustrating to see deficiency symptoms even when fertilizing according to plan. The culprit is almost always an unbalanced pH value in the root zone.   <\/p>\n<h3>The Nutrient Sluice: How an Incorrect pH Value Blocks Uptake<\/h3>\n<p>The pH value determines the chemical form and thus the availability of nutrients in the substrate. It can be thought of as a kind of sluice for the roots. Each nutrient element, such as nitrogen, phosphorus, calcium, or iron, has a specific pH window in which it can be best absorbed by the plant. If the value is outside this window, the nutrients are physically present in the substrate but chemically \u201clocked.\u201d The roots simply cannot absorb them, no matter how much fertilizer you add. For example, a pH value that is too high blocks the uptake of iron and manganese, leading to the typical yellow leaves on young shoots. A value that is too low can make the uptake of calcium and magnesium difficult. Keeping the <strong>optimal cannabis pH value<\/strong> thus opens all the sluices for complete nutrition.       <\/p>\n<h3>pH Lockout: When Fertilizing Worsens the Problem<\/h3>\n<p>This is where most beginners make the critical mistake. They see a <em>cannabis nutrient deficiency<\/em> and their reaction is: more fertilizer. But if the cause is an incorrect pH value, this leads to a \u201cnutrient lockout.\u201d The unused nutrients accumulate as salts in the substrate. This <strong>salt buildup in substrate<\/strong> increases the total salt content, which we measure as EC value. This dramatically worsens the situation: the roots are damaged by the high salt concentration (nutrient burn), which further reduces their ability to absorb water and nutrients.      So you\u2019re literally fertilizing your plant to death while it\u2019s starving.<\/p>\n<h2>pH 6.5 Is Not Enough: Finding the Optimal Cannabis pH Value for Your Substrate<\/h2>\n<p>The blanket statement \u201cpH 6.5 is perfect\u201d is a dangerous oversimplification. The ideal pH range depends crucially on your growing medium. What works in soil can cause a catastrophe in a hydroponic system. Precision is the key to success here.   <\/p>\n<h3>Soil \u2013 The Forgiving Buffer (pH 6.0 \u2013 7.0)<\/h3>\n<p>Soil is ideal for beginners because it has a natural buffering effect. Microorganisms and organic matter help stabilize the pH value and compensate for minor fluctuations in the irrigation water. The optimal range here is between 6.0 and 7.0. Within this window, you should allow the value to fluctuate slightly, because not all nutrients are optimally available at exactly the same pH value. Watering with pH 6.2 and the next time with pH 6.8 ensures that the plant has access to the entire nutrient spectrum. The \u201csweet spot\u201d is often around 6.5, but flexibility is an advantage here.     <\/p>\n<h3>Coco & Hydro \u2013 Precision is Key (pH 5.5 \u2013 6.5)<\/h3>\n<p>Inert media like coco fiber (coco) or hydroponic systems contain no nutrients and have virtually no buffering capacity. You are 100% responsible for nutrition, and the system reacts immediately to any change. Here, the optimal pH range is narrower and lies in the slightly acidic range of 5.5 to 6.5. The absolute \u201csweet spot\u201d for maximum availability of most nutrients is between 5.8 and 6.0. Deviations show up extremely quickly in these systems, so daily monitoring is mandatory. Keeping the <strong>optimal cannabis pH value<\/strong> stable here is crucial for yield.     <\/p>\n<h3>From Seedling to Bloom: Adapting to the Life Stage<\/h3>\n<p>Experienced growers even adjust the pH value to the plant\u2019s life stage. In the vegetative phase, where a lot of nitrogen is needed, a slightly lower pH value can be advantageous. In the flowering phase, the need for phosphorus and potassium increases. Since phosphorus is better available at a slightly higher pH value (e.g., 6.2 in coco, 6.7 in soil), a slight upward adjustment can be useful to maximize flower formation.   <\/p>\n<h2>Diagnosis in the Drain: How to Correctly Identify and Measure pH Problems<\/h2>\n<p>Your plants speak to you. You just have to learn to interpret their signals correctly. Yellow leaves are not always a simple deficiency, but often a cry for help from the root zone.  <\/p>\n<h3>Your Plant\u2019s Warning Signs: Interpreting Yellow Leaves and Brown Tips<\/h3>\n<p>A classic sign of a pH problem is interveinal chlorosis \u2013 yellow leaves with green veins, usually on the upper, young shoots. This practically screams iron deficiency, which is almost always caused by a pH value that is too high. Burnt, brown leaf tips and dark green leaves that curl downwards like claws (\u201ceagle claws\u201d) indicate nutrient burn, caused by an excessively high EC value and a probable lockout. Do not ignore these signs; they are your early warning.   <\/p>\n<h3>The Truth is in the Drain: Why Runoff is More Important Than Input<\/h3>\n<p>Measuring only the pH of your irrigation water is like driving a car and only looking at the fuel tank, but never at the engine. The crucial information is what is happening in the substrate. And you find that out by measuring the runoff water (drain or runoff). The procedure for <strong>measuring runoff<\/strong> is simple:   <\/p>\n<ol>\n<li>Mix your nutrient solution and measure the pH and EC values (input).<\/li>\n<li>Water your plant slowly and evenly until about 15-20% of the water runs out of the bottom of the pot.<\/li>\n<li>Collect this drain water and measure its pH and EC values (output).<\/li>\n<\/ol>\n<p>Comparing input and output gives you an exact picture of the condition of your root zone.<\/p>\n<h3>What the EC Value in the Drain Reveals<\/h3>\n<p>The <strong>drain EC value<\/strong> is your best indicator of nutrient uptake. If the <strong>runoff EC value<\/strong> is significantly higher than that of your irrigation water, salts are accumulating. The plant is not consuming what you are serving it. The solution is to lower the EC value of the nutrient solution or flush the substrate with pH-regulated water. If the EC value in the drain is lower than the input, the plant is hungry, and you can carefully increase the fertilizer concentration. The ideal state is when the EC value in the drain is only slightly above that of the input.     <\/p>\n<p><a href=\"https:\/\/drain-master.de\/en\/product\/drainmaster-set-of-6\/\">DrainMaster set of 6<\/a><\/p>\n<p><a href=\"https:\/\/drain-master.de\/en\/store\/\">DrainMaster Shop<\/a><\/p>\n<p><a href=\"https:\/\/drain-master.de\/en\/2026\/04\/06\/growing-cannabis-legally-in-2026-the-complete-guide\/\">Growing cannabis legally in 2026: The complete guide<\/a><\/p>\n<p><a href=\"https:\/\/drain-master.de\/en\/2026\/04\/06\/start-your-outdoor-grow-guide-for-balcony-garden\/\">Start your outdoor grow: Guide for balcony & garden<\/a><\/p>\n<div class=\"woocommerce columns-1 \"><ul class=\"products columns-1\">\n<li class=\"product type-product post-92318 status-publish first instock product_cat-untersetzer product_cat-gartenbedarf has-post-thumbnail taxable shipping-taxable purchasable product-type-simple\">\n\t<a href=\"https:\/\/drain-master.de\/en\/product\/drainmaster-xl-single-set-incl-tub\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><div class=\"woocommerce-image__wrapper\"><a href=\"https:\/\/drain-master.de\/en\/product\/drainmaster-xl-single-set-incl-tub\/\" title=\"DrainMaster XL incl. Tub (Set Size Configurable)\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><div class=\"shoptimizer-plp-carousel-container\"><div class=\"shoptimizer-plp-image-wrapper\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/drain-master.de\/wp-content\/uploads\/2024\/12\/1-4-1-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"DrainMaster XL\" srcset=\"https:\/\/drain-master.de\/wp-content\/uploads\/2024\/12\/1-4-1-300x300.jpg 300w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/12\/1-4-1-600x600.jpg 600w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/12\/1-4-1-1024x1024.jpg 1024w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/12\/1-4-1-768x768.jpg 768w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/12\/1-4-1-1536x1536.jpg 1536w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/12\/1-4-1-990x990.jpg 990w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/12\/1-4-1-441x441.jpg 441w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/12\/1-4-1-100x100.jpg 100w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/12\/1-4-1-800x800.jpg 800w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/12\/1-4-1-150x150.jpg 150w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/12\/1-4-1.jpg 2000w\" sizes=\"(max-width: 360px) 147px, (max-width: 300px) 100vw, 300px\" \/>\t\t\t\n\t<\/div><\/div><\/a><\/div><div class=\"woocommerce-card__header\">\t\t\t\t\t<p class=\"product__categories\"><a href=\"https:\/\/drain-master.de\/produkt-kategorie\/gartenbedarf\/untersetzer\/\" rel=\"tag\">Untersetzer<\/a>, <a href=\"https:\/\/drain-master.de\/produkt-kategorie\/gartenbedarf\/\" rel=\"tag\">Gartenbedarf<\/a><\/p>\t\t\t\t<div class=\"woocommerce-loop-product__title\"><a tabindex=\"0\" href=\"https:\/\/drain-master.de\/en\/product\/drainmaster-xl-single-set-incl-tub\/\" aria-label=\"DrainMaster XL incl. Tub (Set Size Configurable)\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">DrainMaster XL incl. Tub (Set Size Configurable)<\/a><\/div><\/a><p class=\"price\"><span class=\"woocommerce-Price-amount amount\"><bdi>39,99\u00a0<span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span><\/bdi><\/span><\/p><\/a><a href=\"\/en\/wp-json\/wp\/v2\/posts\/243319?add-to-cart=92318\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_92318\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"92318\" data-product_sku=\"DM-01-XL\" aria-label=\"Add to cart: \u201cDrainMaster XL incl. Tub (Set Size Configurable)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDrainMaster XL incl. Tub (Set Size Configurable)\u201d has been added to your cart\" role=\"button\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_92318\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t<input type=\"hidden\" class=\"pmwProductId\" data-id=\"92318\">\n\t\t\t\t\t<script data-cfasync=\"false\">\n\t\t\t(window.pmwDataLayer = window.pmwDataLayer || {}).products                = window.pmwDataLayer.products || {};\n\t\t\twindow.pmwDataLayer.products[92318] = {\"id\":\"92318\",\"sku\":\"DM-01-XL\",\"price\":39.99,\"brand\":\"\",\"quantity\":1,\"dyn_r_ids\":{\"post_id\":\"92318\",\"sku\":\"DM-01-XL\",\"gpf\":\"woocommerce_gpf_92318\",\"gla\":\"gla_92318\"},\"is_variable\":false,\"type\":\"simple\",\"name\":\"DrainMaster XL incl. Tub (Set Size Configurable)\",\"category\":[\"Untersetzer\",\"Gartenbedarf\"],\"is_variation\":false};\n\t\t\t\t\twindow.pmw_product_position = window.pmw_product_position || 1;\n\t\twindow.pmwDataLayer.products[92318]['position'] = window.pmw_product_position++;\n\t\t\t\t<\/script>\n\t\t<\/div><\/li>\n<\/ul>\n<\/div>\n<h2>From Measuring to Mastering: Actively Controlling pH and Preventing Problems<\/h2>\n<p>Reacting is good, acting is better. With regular monitoring of your drain, you can solve problems before they even become visible. A stable root environment is the key to healthy plants and maximum yields.  <\/p>\n<h3>How to Effectively Correct the pH Value in the Substrate<\/h3>\n<p>If the drain measurement reveals a problem, don\u2019t panic. Correction happens slowly and over several watering cycles. If the drain pH deviates significantly, adjust the pH of your next irrigation solution specifically. For example, if the drain pH in soil is 5.5, water next time with a pH of 7.0 to gently raise the value in the substrate. Radical flushing is only necessary for extreme nutrient burn (very high EC). A stable <strong>optimal cannabis pH value<\/strong> in the substrate is achieved gradually, not by force.     <\/p>\n<h3>Make Monitoring a Routine: Drain Measurement Made Easy<\/h3>\n<p>The key to success is consistency. Make drain measurement a fixed part of your routine, at least once a week. This prevents the dreaded <strong>salt buildup in substrate<\/strong> and allows you to perfectly tailor your feeding schedule to your plant\u2019s needs. This ensures that your <strong>cannabis pH value remains optimal<\/strong>. Tools like the <strong>DrainMaster<\/strong> \u2013 a mini drainage tray made from ASA plastic like those used in the automotive industry, made in Germany, manufactured with 100% green electricity and our own PV system \u2013 make this crucial step enormously easier. Instead of lifting the pot or handling saucers, the integrated transparent 1.5 L tray catches the drain directly. You simply place your measuring device directly in the tray and read pH and EC in relation to the input \u2013 in seconds instead of minutes. Precise control has never been this easy.       <\/p>\n<figure style=\"margin: 2rem 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; border-radius: 8px;\" src=\"https:\/\/drain-master.de\/wp-content\/uploads\/2026\/04\/infografik-3-scaled.webp\" alt=\"pH 6.5 is not always right. - Infographic\"><\/figure>\n<h2>Frequently asked questions<\/h2>\n<details style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 8px; overflow: hidden;\">\n<summary style=\"padding: 14px 18px; cursor: pointer; font-weight: 600; font-size: 1.05em; background: #fafafa; list-style: none;\">Why is a pH value of 6.5 wrong for my coco grow?<\/summary>\n<p style=\"padding: 14px 18px; margin: 0; color: #555; line-height: 1.6; border-top: 1px solid #e5e7eb;\">In coco substrate, the ideal pH range is between 5.5 and 6.5, with a sweet spot around 5.9. A constant value of 6.5 is already too high and blocks the uptake of important nutrients like calcium and magnesium, which quickly leads to deficiencies. This case proves that the rule \u201cpH 6.5 is not always right\u201d absolutely applies.  <\/p>\n<\/details>\n<details style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 8px; overflow: hidden;\">\n<summary style=\"padding: 14px 18px; cursor: pointer; font-weight: 600; font-size: 1.05em; background: #fafafa; list-style: none;\">Can I simply always water with pH 6.5 in soil?<\/summary>\n<p style=\"padding: 14px 18px; margin: 0; color: #555; line-height: 1.6; border-top: 1px solid #e5e7eb;\">Although pH 6.5 is the sweet spot for soil, a slight variation within the window of 6.0 to 7.0 is actually beneficial. By slightly varying the pH value of your irrigation water, you ensure that your plant can optimally absorb the entire spectrum of nutrients. Stubborn 6.5 can restrict the availability of certain micronutrients in the long run.  <\/p>\n<\/details>\n<details style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 8px; overflow: hidden;\">\n<summary style=\"padding: 14px 18px; cursor: pointer; font-weight: 600; font-size: 1.05em; background: #fafafa; list-style: none;\">What is a pH lockout and how is it related to incorrect pH value?<\/summary>\n<p style=\"padding: 14px 18px; margin: 0; color: #555; line-height: 1.6; border-top: 1px solid #e5e7eb;\">A pH lockout occurs when the pH value in the root zone is outside the optimal window for your substrate. Although nutrients are present in the substrate, the plant can no longer absorb them chemically, leading to deficiencies. This shows that \u201cpH 6.5 is not always right\u201d and adjustment to the substrate is crucial.  <\/p>\n<\/details>\n<details style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 8px; overflow: hidden;\">\n<summary style=\"padding: 14px 18px; cursor: pointer; font-weight: 600; font-size: 1.05em; background: #fafafa; list-style: none;\">My drain pH differs significantly from the irrigation water, is that a problem?<\/summary>\n<p style=\"padding: 14px 18px; margin: 0; color: #555; line-height: 1.6; border-top: 1px solid #e5e7eb;\">A slight deviation of up to 0.5 is normal and shows that the substrate is working. However, if the difference in pH value between irrigation water and drain is consistently greater than 1.0, this indicates a problem, such as salt accumulation. Then you should take action and check the cause.  <\/p>\n<\/details>\n<details style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 8px; overflow: hidden;\">\n<summary style=\"padding: 14px 18px; cursor: pointer; font-weight: 600; font-size: 1.05em; background: #fafafa; list-style: none;\">Why should I let the pH value fluctuate in hydroponics?<\/summary>\n<p style=\"padding: 14px 18px; margin: 0; color: #555; line-height: 1.6; border-top: 1px solid #e5e7eb;\">In hydroponic systems, the ideal pH window is very narrow, usually between 5.5 and 6.0. Different nutrients are best absorbed at slightly different pH values. A targeted fluctuation, for example from 5.6 to 6.0 and back, maximizes the availability of all elements for your plant.  <\/p>\n<\/details>\n<details style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 8px; overflow: hidden;\">\n<summary style=\"padding: 14px 18px; cursor: pointer; font-weight: 600; font-size: 1.05em; background: #fafafa; list-style: none;\">How do I recognize that my problem is the pH value and not a nutrient deficiency?<\/summary>\n<p style=\"padding: 14px 18px; margin: 0; color: #555; line-height: 1.6; border-top: 1px solid #e5e7eb;\">The classic sign is when you fertilize according to the feeding schedule, but deficiency symptoms like yellow leaves or brown spots still appear. Before you increase the amount of fertilizer, you should measure the pH and EC value of your drain. A significantly deviating pH value is often the real reason for the symptoms.  <\/p>\n<\/details>\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>What your substrate really needs. Adjusting the Optimal Cannabis pH Value is perhaps the most important skill that distinguishes an&hellip;<\/p>\n","protected":false},"author":1,"featured_media":243322,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_title":"Optimal Cannabis pH Value - The Guide for Soil, Coco & Hydro","rank_math_description":"The optimal cannabis pH value for soil, coco & hydro is not always 6.5! Learn how to avoid pH lockout and find the right value. 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