https://greenbookpages.com/blog/201758/hydroponic-ph-levels/ Mon, 24 Apr 2017 15:47:41 +0000 hourly 1 http://wordpress.org/?v=3.4.2 https://greenbookpages.com/blog/201758/hydroponic-ph-levels/#comment-13133 purplegrower Thu, 26 Jan 2012 23:52:12 +0000 http://greenbookpages.com/?p=201758#comment-13133 PH testing is commonly overlooked with new growers, this easy step is very important... PH testing is commonly overlooked with new growers, this easy step is very important…

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