What is the best living filter?

[kwirky]

you mean things that export/use nutrients?

[christyf5]

I would suggest macroalgae as most living things wouldn't be well supported by the amount of nutrients in your water (ie. you probably don't have enough).

[Der_Iron_Chef]

Xenia is good, I hear. I'm not sure if that's what you mean, though....

[BCOrchidGuy]

Thanks for the replies, Christy, I think you are right, not enough nutrients with out polluting the rest of the tank.
I guess Macro Algaes will be the garden under the tank.

Doug

[Scavenger]

I've heard of all sorts of life filters in the sump or fuge,but have no first hand experience:

1:Live Oysters. (if one dies your in trouble)
2:Mangroves
3:Aipstatia farm
4:Xenia
5:Button Polyps

There is an interesting video on sump design here with live filters incorporated www.reefvideos.com (2nd vid from left on top row.)

Hope some of this helps.