I haven't been on in ages because I lost my betta of two years a while ago and moved to another state since then, leaving my 10 gallon tank behind. Since then my mother has been caring for my 10 gallon and the tetras in it. She has become somewhat of a fish enthusiast and has really enjoyed having the tank. She started adding live plants to the aquarium and it now looks lush and lovely (something I could never do, plants and I never agree with eachother). But recently when I returned home for a visit I saw there were some new additions. When I had the tank there was a school of six tetras and two ghost shrimp. She has since added a snail (I have no idea what kind, I know nothing about snails) and here's the big one- a betta. As soon as she sent me the picture I fell in love. He's beautiful, and I can't believe she found him as petco. I have to admit the tank looks gorgeous but it seems like that's a lot for a tiny ten gallon. While I have told her to be wary of pet store employees I'm pretty sure one of them told her this was an okay set up. She does regular water changes (50% of water every two weeks I believe). I'm just wondering if all these guys can coexist in a tank of that size? My initial reaction was to want to put the betta and either the snails or the shrimp in their own tank. But do you think more frequent water changes could help with the bioload instead of separating the fish? Right now it's something would like to try and avoid because I would have to teach my mother how to cycle an all new tank. This is kind of a last resort if absolutely necessary.
Also, a minor question - when I saw the tank I noticed that the temperature was 85 degrees. So I turned the dial on the heater clockwise (it's a marineland submergible heater) to turn it down and the thermometer is still showing that it's the same temperature. Does that mean the heater is broken or that it is just taking awhile to take affect? Also is clockwise the right way to turn this heater down (I tried to find a guide online and had no luck)? What temperature would be best for what's in this tank? I was trying to set it at 80 degrees Farenheit.
Sorry for such a long post - but I'm worried about the tank!