I am looking for a good PH pen so I can balance my nutes, pretty sure when most plants do great with a certain soil mix or feed mix and one oddball doesn't do well its genetic sensitive to PH.

I have had some stuff stay dark green all the way through with water only for the last month and all the other plants have necrosis.
Hempsouth Reviewed by Hempsouth on . The start of my new grow! Room is under construction,but it's almost done and ready for my girls. Here are a few of the elements that will take these gurls to the end! I'll post more pics today of the finished room.AC/DC! Flick Of The Switch.... Ga Grown! Rating: 5