Hi All! I got Bert Betta in January and so enjoy having him here! He lives in a 5 gallon tank with a filter, light, silk plants and a thin layer of gravel (maybe 3/4" deep - I had a much thicker layer orig., but have removed much of the gravel).
I also have a heater for him (Top Fin 60Hz/50W).
About a month ago, we went through a bout of fin rot - his fins got very thin and then a bit of the tail was missing one day. I had been keeping an eye on him and questioning fin rot, but was not sure until he lost some of the tail. Dumb newbie! I cleaned the tank thoroughly and started Tetracycline treatments and he has seemed stable ever since.
I do have a question about keeping the tank clean, though. Every week, I scoop out a bowl full of his tank water and transfer him to that bowl while I clean. I remove 2/3 of the water, the plants and the gravel and wash all of the above in hot, running water. The heater seems to get slimy - it has rubber knobs on the top and bottom of the heater and the slimy, white coating seems to be collecting on these rubber caps. When I do my weekly cleaning, the water gets very cloudy for an hour or so - including this white slimy film that's coming off of the heater and floating around in the water. After cleaning, things seem to settle down - I run the filter for 1/2 hr. or so before returning Bert to his tank and the water does clear up/settle.
I seem to have stable water chemistry. I use Stress Zyme+ and aquarium salt (1 tbs) when I do the weekly water change. Water temp is stable and in appropriate range. Bert seems happy and active and eats enthusiastically, etc. But, clearly, something triggered the fin rot - and I suspect it has something to do with my cleaning routine. Any suggestions? I want to do what I can to keep my little guy happy and healthy! Thank you!