First thing I did was check my levels, they are normal, Ive got water lettuces in there that's evened out my nitrate level I was for a while having issues with that... I wash the filter once a week, and it wasn't very dirty. I guess that the guy was just doing it because he can. He is now back in the water and swimming around... Every once in a while Ill see him climb up there for an hour or so, then he jumps back in the water... Strange frog... The tanks been set up for about 2 months now. I do water changes when I clean the filter, but I only take like 1/5th of the water out, Once the lettuce grows more I shouldn't need to really change the water... Or I hope I wont need to change it, just got to balance the Eco system. I guess its just the strange frog in a million LOL!