So I have been out of the hobby for a while and need a refresher. My tank is cycling passed through the ammonia spike, it is now at 0.15. Nitrites are very high about 4. I am starting to see brown diatom spike up all over the tank. I think this is normal. So I guess my question is, should I let the cycle ride out. Or should I do a small water change? Then when is a good point to put a clean up crew in the tank and what is best for diatoms?
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