I need Help

[neoh]

Originally Posted by craigwmiller

The only caution I would have to this method is that if you don't remove the source of nitrates they will come back. Be it source water, sand bed, filter floss, over feeding, etc.

In RomaFan's case, water is already being changed and it's not helping, so the source is very active and removing the source needs to happen first, then a massive water change afterwards!

This is very true.

If it were me, I would vacuum up as much of the sand as I could, while removing it, then complete a 90% waterchange.

High nitrates like that in such a small system should be manageable.

Have you checked the nitrates of the water out of the tap?