Nanoreefnewbie, what nitrate test are you using. Also, can you post the rest of your parameters and what tests you're using for them? Honestly, I don't trust your test at this point.
If you did a 50% change, that would have brought your nitrates down to 20ppm. A 25% change the next day would have brought them down to 15ppm. 25% the next day would bring them down to 11.25ppm, then 8.43ppm, then 6.32ppm . . . on day six 4.74ppm. Of course, nitrate would be building at the same time, so it would probably take a week or more to get the nitrates below 5ppm. Only the first water change would have a huge effect on the levels, and the effect becomes less and less with each water change.
Have you recorded your daily nitrate levels? If so, can you share them?
__________________
Shelley
|