May I throw in a related question myself re cleaning the tank? I've been trying to figure out if it is best to clean the tank (vacuum) and change water with the fish still in there. I've tried both ways--taking them out while cleaning and cleaning with them in tank and somebody ends up injured, shocked and/or dead some of the time>
I also am not sure to do with my 2 gallon betta bowl. Same problem. He's only 3 days with us and just settling in (bubble nest, etc) and I know you're supposed to change a static tank's water (no filter) more often. I'm worried about how much to change, do I vacuum, do I move him out and change whole or most of the 2 gallons? I'm afraid of "freaking the little guy out". Any suggestions would be appreciated..
Wendy