I have no experience with fluval's, but from a lot of people on forums I'm apart of I see a lot of people say they work at first but then have major leaking issues.
I though personally have experience with Rena XP3 and a Eheim 2026. My XP3 is on a 127g turtle tank with 2 turtles and 6 fish. It keeps that tank crystal clear. Filter is quiet and cleaning it is so easy. I'm actually going be getting another XP3 for that tank just so I don't have to clean it as often since turtles are messy.
My eheim 2026 is on a 37g long turtle tank. At first I heard mixed reviews on eheim filters but I was in the market for a filter and my petsmart had the eheim 2026 plus media package for $49.99 and I couldn't beat that price. So I bought it and went home and hooked it up. It's been about 3 months and that thing has been running amazing. I am very happy with the filter. Keeps my tank crustal clear and runs quiet as well. I haven't cleaned it yet so I know nothing on how easy it is but I bet it's easy cause set up was easy.
I highly recommend either the Rena XP3 or the Eheim canisters.
Like I said though fluval's I haven't heard good things on, the only model I have heard good things of for fluval's is there FX5 that's rated up to 400g.
Hope my info helps! Update us on what you get!
