1.5 gallon canister denitrator
Cost to build
Canisters recycled from trash free
1/2 pex tube $2.00
Pumice substrate. $15.00
Pre filter $5.00
IV Drip $2.50
In flow is tapped from circulation pump. Pre filtered thru poly fiber.
Then to IV Drip regulator. Medical IV Bag type.
The drips go into 1/2" pex pipe in center of cylinder. Which has a small cage on the bottom to keep the pumice from plugging it.
Flows up thru 3/8" pumice.
Any gas build up gets vented to the open surface.
The water then gets overflowed siphoned, through airline tubing inside the larger tube in the photo. Into a 1/2 gallon cylinder full of 1" red lava rock. Thur 1/2 pex to the bottom and flows up. It then goes out through a piece of airline tube into the sump.
When I first built this thing I knew nothing about coil denitrators. Only industrial stuff and sulfur denitrator. This is more of a " live rock, deep sand bed configuration.