I have a 20 long that until today had a pair of guppies, pair of dalmatian mollies, pair of cherry barbs and an albino cory cat. Lately the female guppy has been spending all of her time at the top and doesn't seem to be eating-the rest of the fish have been fine. Then today I noticed the female molly staying up top a lot and then this afternoon she was dead. Very sudden and I had not noticed her acting odd. Then by tonight the female guppy is about to die. She was stuck to the suck pipe of the filter a couple times so I unplugged it (should I buy one with variable speeds?) and now she is alive but either swimming with her nose down or staying up top. AND the cherry barbs are molesting her like crazy. We did a partial water change today (about 1/3 of the water) and noticed a LOT of crap coming out of the gravel so we will do another in 2 or 3 days. I suppose we're overfeeding or something-I will definitely not feed tomorrow at all. Also, tomorrow I will go and get a test kit. Anything else I can try? My water is now really cloudy and icky looking.
eta: these fish are all about 10 days from when I got them at the LFS other than the catfish which was bought about a week before that. The tank has been full of water since last summer when we tried (and failed) to keep goldfish and I did a 50% change before getting the tropical fish plus changed the filter cartridge. Filter is a penguin bio wheel without the bio wheel.
eta: these fish are all about 10 days from when I got them at the LFS other than the catfish which was bought about a week before that. The tank has been full of water since last summer when we tried (and failed) to keep goldfish and I did a 50% change before getting the tropical fish plus changed the filter cartridge. Filter is a penguin bio wheel without the bio wheel.