NEED HELP STAT!

Hi everyone,

Recently I have been having some problems with my tank. My nitrates were on the rise, they ended up getting to 40 ppm, I did constant large water changes and started using bio pellets but things just got worse. Since then I removed the bio pelltets and went back to basics. I ended up discovering that my sand bed was the cause of my nitrate problems. Slowly I removed my sand bed and after all of it was gone my nitrates have fallen to below 10ppm.

I also have ...

Hey everyone,

Need some help. I've been running Biopellets in a phosban reactor for a month now with no reduction in nitrates. Flow is strong in the reactor.

My parameters are:
Nitrate 25ppm salifert
phosphate 0.00ppm Hanna
Alk 8.0 Hanna
Calcium 430 Salifert
Nitrite 0 API
Ammonia 0 API
Mag 1350 Salifert

The tank is about 3 years old. Nitrates have always been around the 25ppm, I have good water flow, two MP40's, very ...