this might be true if you are taking water directly from the tap....
how about water that has been sitting in a holding tank for a few days?
That's basically what I was talking about. I should have said "the H2O you are introducing may
be saturated with O2". I tend to agree with you that aged water that has off gassed probably won't cause the "water change" pearling.
Eheim Pimp #204.
58 gal planted Oceanic
Red Turquiose Discus, Japonica shrimp, assorted Blue Eyed Rainbows, Tetras, Hatchets, Danios, Rasboras
10 gal low tech planted Celestial Pearl Danio (Celestichthys margaritatus) & Emerald Dwarf Rasbora (Microrasbora erythromicron)