Pictures of my denitrator

[Osiris]

First is an empty fish food container for intake. There is a hole drilled in the top for the hose. Then there are tons of little holes drilled in the bottom for intake, and a piece of filter foam to catch any stray bubbles.

Second is the canister filled with the irrigation hose, you can just see how tightly it is packed in there. The hoses are secured with aquarium epoxy.
You can also see how I sealed off the factory hose hookups with the torch. Filled the interior of the denitrator with a gallon of bioballs.

Last picture is the simple irrigation flow valve set to two drips per second. It goes into the sump, all gravity fed. If need be you could just put a pump on the exit hose back into aquarium if you have no sump.

It was a learning experience but all said and done cost about $30.00 to do. I had the old Fluval 403 canister and the bioballs already. Who says those old parts and pieces you keep are worthless garbage? Wife does but she is starting to see why I keep stuff.

http://www.canreef.com/photopost/data/500/intake.jpg
http://www.canreef.com/photopost/dat...m/canister.jpg
http://www.canreef.com/photopost/dat...lowcontrol.jpg