Alrighty, soon I will be dividing my 5.5 gal and keeping bettas in it. I don't know yet about having a filter, I have to find one first so I might just keep them without a filter. There will most likely be 3 in the tank. How much do I clean the tank with or without the filter? Right now mine live in 1 gals, and I clean them like 80% every week and the fishies are doing fine. This is my first bigger tank so any help is greatly apprechiated thx.
