Started building a sand filter out of pvc
to hopefully filter some nitrates. Waiting for pvc
glue to dry. Says 24 hrs but it still stinks.
Any way the idea is a pipe within a pipe with slits in the bottom of the inner pipe to allow water passage. Both pipes will be full of sand and water fed in with a irrigation dripper.
The water will just overflow from the outer pipe back into the tank.
Anyone had success with nitrate filters?