I seen you had talked in a post about water filters and too much flow. When I went to post to it, the system wouldn't allow me too so I just thought id directly as you for some advice if you could help me. Does you know how much a filter should have for flow? I keep looking at aquarium kits like a 5 gallon but all the filters say 45gph/. Is this too fast? Is their a way to slow it down? I would like to upgrade him to a larger tank but I can not find the proper filter for him. I did find one filter (sold separately) that was a 1-3 gallon. Being smaller in a 5 gallon tank would that give a good flow?