Turtle pond filter????

[mothernature]

I have 10 Red Ear Slider(R.E.S.) tutles that I will one day build a large pond with several small ponds just for them. I only am experienced with whisper power filters for indoor use. Can you use a fluval on an outside pond? With turtles? How many of these fluvals would I need? Can I use the fluvals in the fish section rather than the wimpy fluvals in the reptile section of a pet store?
Can I just buy a fluval per turtle? :eek:
Thanks in advance, Sorry if this is in the wrong section but I figured, its a pond question. As I would like for feeder goldfish to survive long enough to be found , chased and eaten..

[yourmylunch]

an outside pond for 10 res is gonna be prety big. use a koi pond filter it would be a waste of money to buy so many small filters when u need just one big pump and a good place for bacteria to grow. outside plants are gonna provide alot of your filtration. hope this helps or pm me with you specifics

[guppy]

You will need to decide the size of the pond first, pond pumps and homemade filters are the way to go. You get a lot more flow and more biofiltration for a lot less money.