Using API kits the color looks like I am around 6.4ish pH during day with co2 running. I recently got a pH probe for my Apex system to run in the tank, calibrated, and it shows pH at 5.7 during the day and going back to 6.6 at night. I expect a swing of 1 from co2, but how could my pH be that low? Fish and what not are fine, aside from my snails who can't live in that acidic water.
My pH from the tap is 7.2 for reference. Anyone see any negatives to running pH that low?