If your pH is outside the 6-7 range, you may need to adjust the pH to avoid further nutrient lockout on your cannabis plants. AmazonUIPageJS : P).load.js('https://images-na.ssl-images-amazon.com/images/I/21F2Zs7QiBL._RC|01ICUPnvOuL.js,01w9lbij8fL.js_.js?AUIClients/HardlinesDetailPageMobileWebMetaAssetVariable&wnbeQcU2#mobile.us.298736-T1.272527-T1.298734-T1.271895-T1'); Get it as soon as Sat, Oct 17. .prsubswidget-asin-content{padding-left:15px;padding-right:10px}.prsubswidget-asin-brand{display:block}.prsubswidget-asin-title{cursor:pointer;display:block}.prsubswidget-review-count{display:inline-table;vertical-align:text-top}#prsubswidget .a-icon-prime{margin-top:6px}.prsubswidget-asin-grid-column:not(:last-child){border-right:1px solid #DDD}#prsubswidget .a-carousel-col.a-carousel-center{margin:0 10px}#prsubswidget-title{margin-top:10px;margin-left:10px}#prsubswidget-title>div{width:100%}#prsubswidget .a-carousel-card{min-width:280px} (window.AmazonUIPageJS ? We'll also keep you updated on the latest product releases. There was a problem completing your request. So, for whatever reason, it never occurred to me before sometime last week that the acid and alkaline used in the majority of pH products are the exact same chemicals used to provide phosphorus and potassium in some bottled nutrients. Brief content visible, double tap to read full content. Hey oneshot, simple and cheap would be to go buy a bottle of ph up and ph down. (window.AmazonUIPageJS ? VIVOSUN pH and TDS Meter Combo, 0.05ph High Accuracy Pen Type pH Meter ± 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter, General Hydroponics Flora Grow, Bloom, Micro Combo Fertilizer set, 1 Quart (Pack of 3). Decide what plants to grow before you adjust the soil's pH. We work hard to protect your security and privacy. #prodDetails .prodDetTable{table-layout:fixed;border-spacing:0;padding:0}#prodDetails .prodDetLabel{background-color:#F5F5F5;width:35%;color:#666;vertical-align:top}#prodDetails .prodDetSectionEntry{width:50%!important;white-space:normal;word-wrap:break-word}#prodDetails .prodDet-expander-header{float:right}#prodDetails .prodDet-summaryText-visible{display:none}#prodDetails .prodDet-heading-alignment{float:left}.uilm-section img{display:block;margin:0 auto;min-width:650px}#medslogo_header_web{padding-bottom:0;color:#C60;font-size:medium;font-family:verdana,arial,helvetica,sans-serif}.burj-body #medslogo_header_web{color:#333;font-weight:400;padding-bottom:0;font-size:21px;font-family:arial,verdana,helvetica,sans-serif}#mllStaticLearnMore{padding-left:14px}#mll-tab-divider{padding-top:30px}#medsLegalLogo_feature_div{margin-bottom:14px!important}#energyEfficiencyLabel{display:inline-block;width:50px;height:23px}.energyEfficiencyArrow{position:relative;width:36px;height:22px;margin-right:22px;color:#FFF;text-align:center;line-height:22px;font-size:15px}.energyEfficiencyArrow:after{content:"";position:absolute;left:100%;top:0;width:0;height:0;border-top:11px solid transparent;border-left-width:10px;border-left-style:solid;border-bottom:11px solid transparent}.energyEfficiencySymbol{position:relative;top:-2px}.energyEfficiencyTextPlacement{position:relative;left:2px}.technicalData .h3color,.technicalData font,.technicalData ul{color:#333!important}.technicalData b,.technicalData strong{font-weight:400!important}#dealprice_shippingmessage i.a-icon.a-icon-popover,#ourprice_shippingmessage i.a-icon.a-icon-popover,#saleprice_shippingmessage i.a-icon.a-icon-popover,.buyboxShippingLabel i.a-icon.a-icon-popover{display:none!important}