I just started growing again after a couple years of not doing it. I live in a different part of the state and the Ph from before was at 7.8 to 8.1.I have been having some trouble with my current grow.My Ph from my tap is at 9.1 to 9.3.I know this is where my problem is.I'm just wondering has anyone used an under sink reverse osmosis or under sink filter system from Whirlpool.Thanks