Quote:
Originally Posted by tang daddy
Thanks for the responses so far, I've done bp before but the imbalance that causes the red slime I can't accept. I have yet to still test my nitrates, waiting for the test kits....⏲
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IME, if you're getting red cyano from biopellets you probably still have high nutrients, but you're using too many biopellets for the volume of water (too aggressive). If you're getting green cyano you may have hit zero on either PO4 or NO3, and if you remove some pellets it can balance out again. Either way, cyano means remove some pellets IME. FWIW, I use about 1 mL biopellets per gallon of water (include the entire system volume).