Here's my issue....
30 gallon tank, 2 Bala's, 1 Pleco, 1 Turquoise Gourami, all waiting for a 55 gallon to finish cycling.
My Tap PH is 7.0. I'm not exactly sure when the problem arose, but after a water change about 2 months ago, I noticed the PH was about 6.0 the very next day after a water...