I have a 46g bow front. Heavily planted. Finnex rayII, and finnex planted+. They run 2pm to 10pm. Co2 injection comes on at noon. According to drop checker, 30ppm. I dose kh2po4 and k2so4 on mwf, and plantex on tts, Sunday wc and gh booster.
My first issue is blue-green algae. It's most noticeable on the substrate but there is some on the plants as well. I read this is an issue with Co2 but I'm unable to locate the actual problem. My co2 comes on two hours before my lights and according to the drop checker is stable at optimal levels until lights out. So what gives?
My next issue is with green dust algae. It takes a few days to accumulate on the tank walls but never really seems to completely go away. I've read this can be caused by low nutrient levels. I don't dose potassium nitrate because typically my nitrates run high. I have three angelfish and Tetras in the tank which I feed regularly. And I don't want nitrates to become an issue for them. My last nitrate test however revealed quite low nitrates. I guess it was less then 10 ppm after one full week. Could this be the cause of the green dust algae? What is considered low nitrate?
My last issue is with black beard Algae. It accumulates on the powerhead and some of the plants. It's not nearly as prevalent as the blue-green algae but I still consider it a problem. Another CO2 issue I'm guessing. Hopefully once I resolve that both the blue-green algae and Blackbeard algae will go away.
Any help or insight is greatly appreciated.