The liquid PH tester works great. I'm on my 2nd grow (bubbler method), and thats what I'm using. The guy at the hydro store, said you always want the your soln. to look like beer, when Your testing your PH. I have followed that advice, and I don't see myself ever getting another PH testing method, unless I spend the big bucks on the TDS/PH monitor
-somtimes cheap is just as good!!
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