Grass filter idea.

[jcx]

I have a 20 gal rubber maid tub with 26 lil convict cichlids. Getting a little sick of doing so many water changes so I'm thinking of hooking up some kind of aquaponics filter. What I'm thinking of doing is removing the blue carbon filter from my fish tank filter and running the water into a plastic wicker basket full of rocks with grass growing out of it. I'm planing on setting the wicker basket on a half cinder block and just letting the water run into it, not sure how well that is going to work.

If anyone has any ideas on how to rig up a small system or a better plant than grass to put in it for nitrogen removal let me know = )

Here is a picture of the tank.