We think some of the fish have got fin rot. Yesterday morning we woke to a dead Molly and guppy. We went to a fish place and bought some medication for the wate4, but we have had another platy die this evening. The medication is a 3 day treatment, so far we have done 2. Is there anything else we can do as other fish aren't looking healthy either?
The tank is 125l and in it currently we have 5 platies, 4 guppies, 2 otocinclus, 3 shrimps and 2 snails. The levels are all good, the ammonia is 0, nitrates 20 and nitrite 0.5. We have had the tank running for 4 weeks now. since last posting we have seen the platy, who we thought was ill, being bullied by a guppy. We believe he was on the bottom in the plants hiding, he appears to be venturing out more today. However when we came home we found another otocinclus dead, the previous one died Tuesday, and we have no idea what it causing it.
We are having some trouble with our fish tank, we are worried it has some parasite or disease. We had one guppy die last week (it appeared to be suffering from swim b!adder), then a sucker fish suddenly died yesterday and now one of the plants is just sat on the bottom in the plants. He does appear to be able to swim in though. The shop recommended swim bladder medicine but I'm unsure if we can use it since we have shrimp, snails and sucker fish in the tank. Thanks