If your nitrates are now high and they are usualy near 0, this means that probably your ammonia went really high for a while and then was converted to nitrates.
Quote:
Originally Posted by ScubaSteve
Yeah, tell me about it. My ammonia is always zero, that's why I was was worried when it spiked after this filter ordeal. I can't fit any more rock in the tank, so I'm pretty good there. After a large water change and some time this is back down to zero, though nitrates are still high. I typically keep these near 0 ppm as well.
I ran skimmer less for close to a year without any issues. Since I'm moving my tank towards being more SPS oriented I have since switched to skimming and it makes a HUGE difference.
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