My mom has a 50 gallon freshwater tank (bio balls filtration) and for the past year every fish (tetras, mollies, bala sharks, goldfish, swordtails and a variety of cichlids, to name a few) other than angel fish die within a few days of being in the tank - the longest they last are about 10 days. Tank was fine when she inherited it about 4 years ago but has had progressively more and more rapid fish casualties as time has gone on. I've tested chloramine, chlorine, ammonia, pH, nitrogen and nitrate levels and all test normal. Tank temperature is around 75 degrees - introduced live plants about 8 months ago - no improvement. Several partial water changes over several months - no improvement. But, two angel fish have survived for several months. Any idea what's going on and what I can do to stop the other fish from dying - and/or why the angel fish are fine?
2007-05-18
13:03:25
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5 answers
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asked by
Anonymous