I have a 60gal long turtle and fish tank. I had a Fluval 405 for their old 175 tank. We moved to southern CA and the turtles were moved to a different tank and the 405 broke in the move. So I've been changing water constantly. LOVED my 405 so I want another Fluval. The fx5 looks like the best for us. My questions: is it to much power for even a turtle tank (I have 4 turtles), is it possible to somehow get the outake flow to get under the larger pebbles to push up the yuck? I was thinking a wide, spread out flow under pebbles for a complete yuck cover. Incorporating an air stone & pump would be great for my fish in there too, I have a few big goldfish and will soon have a 5in pleco. Does anyone have another idea, or a helpful link maybe? I would appreciate any advice or ideas! Thanks