zero nitrite

Hi, Rajdeep here from India & running a 1.5 years old 70 gallon Fish+Anemone tank (3x2x1.5ft)+Sump (no corals) with typically high bioload, however ample rocks, ceramic rings, some Matrix/denitrate, Chiller, skimmer, UV, Chaeto, Filter Pads are running in the sump. I feed hikari pellets twice &...