Thats cyano allright...I had a bought with it ahwile back I didn't use any chemicals so get ride of it though...I just did alot of water changes and fed less....
One of the major contributers to cyano outbreaks is you nitrate level and your alkalinty level is to low....once I corrected these to things my cyano dissappered and has never come back!!!
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500G Mixed Reef
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Electrician, Electronics Technician, I can help with any electrical questions you might have!!
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Kevin
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