You really want to get a digital one that measures to +/- 0.1 PH. The one you pictured dosn't look accurate enough. If u cant get one locally i recommend you buy online. It may take a week to arrive but at least you have it for next time. And if u have spare cash use the $7.95 one as a rough guide untill a good one arrives.
Keep the water @ 6.5-6.7 PH
Uppen Reviewed by Uppen on . pics of my plant w/nute lockout? hi/low ph? my plant is having a nute lockout problem i assume. can someone tell me if this is from a high or low ph. 1/3 perilite 2/3 miracle grow soil. fed mostly r/o water with some tap water sometimes.pure blend pro bloom formula.for more info please check out my grow log below. i would appreciate the help sooooo much!! PLEASE HELP MY PLANT . http://boards.cannabis.com/showthread.php?p=1164674&posted=1#post1164674 Rating: 5