Hi I would like to know the right way to use a nitrate test kit, the kit I have purchased is a Sera and I completed a test yesterday the first test I did was 10ml tank and 10ml boiled filtered water (cooled of course). The test came out at 80mg/l, I done another test using 5ml tank and 15ml boiled filtered water and the test came out at 20mg/l. Where do I go from here. Tank is 500litres stocked with three Oscars between 160 and 195 mm plus one Pleco 200mm and three small bristlenose who live in a Schist rock formation, an older cannister Fluval 403, an Atman F104, and a sump filter, jury rigged from an old 60 litre tall tank.
I recently had a prob with HITH but the advise I got from this site helped me overcome with larger water changes more often, for that information I want to thank all you people who helped, and now would like to know if I am staying on track with the excesive nitrate problem I must have had with my Oscars. Thank you David from New Plymouth