I need help with my setup for my 2 turtles, 1 mississippi map and 1 southern painted. I am wanting to upgrade my 20 gallon to a 40 gallon but the problem is i need a stronger filter and i found the aquatop CF-300 canister filter with 264 gph. I need to know if thats too much power good or bad. I also have a feeder fish that never got eaten and i've gotten fond of of him. My turtles are 4 1/2" and 3" so thats why the filter needs to be good strong because i've seen tanks with the fish using all their energy trying to get away
. Thanks and the reason i posted this is because i went on a turtle forum and I didnt get any replies and only 10 veiws and i knew i would do better on here. 



. Thanks -matt