You'll need a ppm. pen and ph pen to keep you from going crazy .
I've found them both on ebay for 25.00 each or less . My ppm pen is a Sunleaves brand , my ph pen is a Milwakee brand . Both have been very very good to me . I love hydro. esp. my dwc / drip hybrids.
Peace
Crispi :jointsmile:
xcrispi Reviewed by xcrispi on . affordable TDS PPM meter? well, DWC bucket bubbler hydro looks more and more attractive; and it seems to me that without a PPM meter it's a bit like shooting in the dark i'm curious if someone could reccommmend one; i've never looked for them before; i want something quality, but i need a good price; any thoughts? Rating: 5