A while ago I had problems with my nitrates in my 15g tank, (80ppm) tried everythinh to lower them and eventually struck on Prime which helped. My tap water is naturally 40ppm, we are very rural and agricultural where we live which I think causes the naturally high nitrates in the water.
I managed to get my nitrates to around 30ppm using prime, planting Java Ferns (I'm brackish S.G. 1.006) and 20% water changes every 3rd day but today when I checked my nitrates they were around 100ppm!!!!!!!!!!!! What am I doing wrong?
I feed my F8 puffers (x4 @ 1.5 inches long) every other day 1 cube of frozen food 1cm square or a cockle/mussel.prawn and they have 12 snails a week. All food is immediately eaten, nothings left to root, they are hoovered weekly and have a 20% prime water change once a week.
What should I do? I've just put them into a 40g tank do you think this will help drop the nitrate level as their is more water to dilute the nitrates? I don't even need to measure my Nitrates to know they've gone to high again as one of my little guys gets a dark stress line as soon as they go to high and he loses this the minute I water change.
I need urgent help on this as I'm worried for my stressed fish