My boyfriend has a male RES. It was given to him by a friend about two years ago. We think he is about 4 to 5 years old. When he first got him the tank (about 50 gal) didn't have a filter but the water was always clean. In the past year we have added a filter and a basking spot with the proper lighting. The RES is very healthy. His shell is hard, if fact he is sheding right now. However we are getting concerned on how we are going to make sure he is going to be around for a while. Here are my questions?
What filter would be best for his tank to ensure the water stays clean? (we have read that many people only change their water once a year...it seems as if we change it every two weeks.)
How high should his water level be?
What methods do you use to bulid up a basking spot? (he has several big rocks that he loves but it tends to just be another problem with the dirty tank.)
ANY and ALL help is very much welcome. We are greatful...Thanks in advance.


