Sulphur Denitrator. Now I can select how much nitrate I want in the water whilst feeding my fish as much as I (they) please. Small impact on alk is the only caveat but easily adjusted. Pretty amazing piece of kit it blows my mind they are not extremely common.
Went from 20-50ppm to <2ppm (Red Sea test kit) in a week now my nitrate is stable at around 1ppm but I can still turn it up or down if I like.
Went from 20-50ppm to <2ppm (Red Sea test kit) in a week now my nitrate is stable at around 1ppm but I can still turn it up or down if I like.