06-10-2010, 05:06 AM
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Originally Posted by aunt kymmie
I keep a 10gl QT set up that I'm going to need to use as a hospital tank. Since I couldn't stand the look of an "empty"' tank, I potted up some swords (in those standard clay pots everyone uses) and put these, along with a handful of MTS, a chunk of Malaysian driftwood and a handful of java moss into the tank many, many weeks ago. The tank looks nice, the snails are thriving but... I just tested the pH of this tank and it's 8.6!
What the heck? My tap water is 8.0 and I thought that clay pots had no effect on pH? Since I need to get this tank ready for use tomorrow I suppose I take out all the potted plants and chaulk it up to a failed experiment? Am I missing something?
Clay or terra cotta should not have effect on pH or hardness. When you say the tap tests at 8.0 is this after setting for 24 hours ? Tapwater often tests a bit higher after it has off gassed CO2 that may be present.
My tapwater if tested right off the tap tests moderately hard with pH around 7.2 After 24 hours in barrel or bucket, it tests closer to 7.8 After a 50 percent water change, my tanks that have been running for some time,test at around 7.2 to 7.4.
I would not worry bout the slight difference you recorded unless softwater fish were involved or hardness suddenly increased. I would drip acclimate the fish.
Biological process in tank will tend to create a bit more acidic water over time.