Yea that does sound kinda high for tap water...usually you hear like 5-7.

Dive:stoned:
Divestoned Reviewed by Divestoned on . Water & Nutrient Probs Hey guys, I have recently had a few different issues, firstly the leafs were going yellow and the tips curling. I narrowed that down to the water in the reservoir evaporating and the nutrients remaining and being a little strong for the little fellas (young clones under a 600wHPS). To fix this problem i changed the water to plain tap water and let this go through the system (halo drip) overnight. Hopefully this cures this problem. Today i checked the ph of the water and its a shockingly Rating: 5