Well I have never used DeNitrate but I can vouch that it wasn't MATRIX that was your problem. I have used that forever and in HUGE amounts far above what is recommended and have experienced nothing but greatness.
Take your water and go to your LFS and pay them few bucks to test your water. I think something wrong with your test kits or something went wrong in your tank and you didn't notice about it.oky im so confused what I did wrong? I tested the water and it still the same. the tetra safestart say test in 2 days or something and I did but same result. Should I add another bottle?
I tried testing ammonia on my newly tank and shows no ammonia which is correct since its new tank and is not cycled yet. I have researched that water that is 6.7ph is hard to get cycled cause bacteria cant survive the ph. the only thing I don't understand is how I have nitrate and ammonia and not nitrite? isn't ammonia turn to nitrite then nitrate? If I don't see any nitrite how is it turning into nitrate?Take your water and go to your LFS and pay them few bucks to test your water. I think something wrong with your test kits or something went wrong in your tank and you didn't notice about it.