Question on ph management...
I have recently read that you can use pure 33% sulfuric acid from auto zone to lower ph.
Well I tried it . It works it's safe and for the price of 1 u.s. Gallon of ph down is under 5$.
Only negative aide effect? I can't read the tds. My ppm meter goes CRAZY!.
Any suggestions?
Oh yeah i am putting this stuff right into my 18 gallon resivior...
http://forum.grasscity.com/hydroponic-growing/730285-cheap-ph-down.html
I have recently read that you can use pure 33% sulfuric acid from auto zone to lower ph.
Well I tried it . It works it's safe and for the price of 1 u.s. Gallon of ph down is under 5$.
Only negative aide effect? I can't read the tds. My ppm meter goes CRAZY!.
Any suggestions?
Oh yeah i am putting this stuff right into my 18 gallon resivior...
http://forum.grasscity.com/hydroponic-growing/730285-cheap-ph-down.html