stgla
08/10/2010, 12:06 AM
Is this old tank syndrome? Bad pH probe?
My 75g tank, which is currently running as FOWLR, has been up for five years and has been incredibly stable with respect to pH. I have a reverse photoperiod in the sumpfugium and an AC III monitoring pH and temp. pH has always been between 8.2 and 8.4. About a month ago it dropped to 6.4 and has been declining slowly to about 6.1 over a couple of weeks.
I can't figure out what it is. I tried using a pH test kit (Salifert) in case my probe is bad, but the test was inconclusive. I can't read the damn colors.
The fish (two clownfish, a royal gramma, and a mandarin goby) appear unaffected. Not many inverts in the tank to begin with.
I've been doing water changes, but want to know my next move: do I get yet another test kit, a new probe, or start with daily water changes? Or something more drastic?
My 75g tank, which is currently running as FOWLR, has been up for five years and has been incredibly stable with respect to pH. I have a reverse photoperiod in the sumpfugium and an AC III monitoring pH and temp. pH has always been between 8.2 and 8.4. About a month ago it dropped to 6.4 and has been declining slowly to about 6.1 over a couple of weeks.
I can't figure out what it is. I tried using a pH test kit (Salifert) in case my probe is bad, but the test was inconclusive. I can't read the damn colors.
The fish (two clownfish, a royal gramma, and a mandarin goby) appear unaffected. Not many inverts in the tank to begin with.
I've been doing water changes, but want to know my next move: do I get yet another test kit, a new probe, or start with daily water changes? Or something more drastic?