I recently got co2 last weekend and so therefore i started dosing my dry ferts(nitrate, phosphate, potassium, and csm+b) . I dose .5 to1 teaspoon of nitrate. I tested my nitrate and my reading was about 30 to 35 ppm. I am doing this every other day. I have a fairly heavy planted tank and I change the water every sunday. Why are my nitrate levels so high? Is this harmful?
100g tank:10 small angelfish, 1 harlequin rasbora, 2 albino cory, 2 clown loach, 1 rubberlip pleco, 1 bristlenose pleco and 1 apisto borellis.
Rena Filstar xp3, 2x32 and 1x96 watts with no co2.