I have a problem with my quarantine tank killing fish. It's a 10 gallon that's been running for about 3 months and was seeded by my main tank. It has a heater and sponge filter. I lost two clowns overnight, that had been in the tank for 5 weeks, when the tank suddenly started cycling with high ammonia and nitrite.
Two weeks after it seemed to be done cycling, I dosed bottled bacteria to be safe and put two more clowns into the tank. One of them died in 48 hours from what looked like ammonia or nitrite poisoning despite more than one type of test kit reading none. Red inflamed gills right before death. I did a 25% water change the day before the death to remove excess poop and make sure ammonia stayed down.
I moved the other clown to the display tank right away and I seemed to have moved it in time. It's doing fine in the main tank. I don't trust the quarantine tank anymore. Something is seriously wrong with it and I don't know what.
Is Aqueon dechlorinator bad to use for water changes? Is there not enough filtration? Would two juvenile clowns overload a ten gallon? I don't leave excess food in the tank. Did all the bacteria die off?
Two weeks after it seemed to be done cycling, I dosed bottled bacteria to be safe and put two more clowns into the tank. One of them died in 48 hours from what looked like ammonia or nitrite poisoning despite more than one type of test kit reading none. Red inflamed gills right before death. I did a 25% water change the day before the death to remove excess poop and make sure ammonia stayed down.
I moved the other clown to the display tank right away and I seemed to have moved it in time. It's doing fine in the main tank. I don't trust the quarantine tank anymore. Something is seriously wrong with it and I don't know what.
Is Aqueon dechlorinator bad to use for water changes? Is there not enough filtration? Would two juvenile clowns overload a ten gallon? I don't leave excess food in the tank. Did all the bacteria die off?
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