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Old 10-05-2013, 02:17 PM   #1
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Black algae

My brother in law has just started to get black algae in his reef tank I have never had this in my tank or seen it before it's becoming a real pain for him any help please
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Old 10-05-2013, 09:20 PM   #2
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Check cyano it can come in many colours
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Old 10-05-2013, 09:54 PM   #3
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I'd agree that it is cyanobacteria. Cyano feeds off of nutrient rich water. The cure takes time. Constant changes with ro/di water, or distilled water at best. Lessen feedings, I only feed my reef tank twice a week. If it is bad, you can use a product called red slime remover, but it will come back if the issue isn't addressed like I listed above. Keep in mind, cyano also thrives in low flow areas so increasing the flow will also assist with this, but the nutrient issue will still remain unless addressed.
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Old 10-07-2013, 07:04 AM   #4
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Quote:
Originally Posted by Sniperhank View Post
I'd agree that it is cyanobacteria. Cyano feeds off of nutrient rich water. The cure takes time. Constant changes with ro/di water, or distilled water at best. Lessen feedings, I only feed my reef tank twice a week. If it is bad, you can use a product called red slime remover, but it will come back if the issue isn't addressed like I listed above. Keep in mind, cyano also thrives in low flow areas so increasing the flow will also assist with this, but the nutrient issue will still remain unless addressed.
I agree - Cyrano thrive in a low water movement environment - and additionally low dissolved oxygen conditions. I once had one of those "designer" tanks that was 25" deep and 18" square for the opening. Nothing but trouble battling Cyrano in that tank - adequate oxygen is a must...
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