Cyanos, dinos or something else? Please help

NicholasP

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I've been constantly cleaning the aquarium and battling this thing for over a month now, using diy coral snow, plus corals snow+bacteria for the last 3 days, while also dosing phosphates as they're tanked, and don't seem to be able to get rid of these. I clean everything. I vacuum, blow them off the rocks and corals w a baster but can't seem to get rid of whatever this is.
I can't tell if it's cyano or dinos, and I want them out, it's really stressing me out I'm really worried about my corals and fish.
I clean and the within the next hours the glass and the substrate and rocks are all covered again. I'm really frustrated

20250503_183311.jpg 20250503_183253.jpg 20250503_183234.jpg 20250503_183214.jpg 20250503_183241.jpg
 
I've been constantly cleaning the aquarium and battling this thing for over a month now, using diy coral snow, plus corals snow+bacteria for the last 3 days, while also dosing phosphates as they're tanked, and don't seem to be able to get rid of these. I clean everything. I vacuum, blow them off the rocks and corals w a baster but can't seem to get rid of whatever this is.
I can't tell if it's cyano or dinos, and I want them out, it's really stressing me out I'm really worried about my corals and fish.
I clean and the within the next hours the glass and the substrate and rocks are all covered again. I'm really frustrated

20250503_183311.jpg 20250503_183253.jpg 20250503_183234.jpg 20250503_183214.jpg 20250503_183241.jpg
I’m sorry to hear. But it would help if we knew your parameters, and how old the tank was.
 
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Based on your description, speed at multiplying and pics, I’d say golden Dino's.
Do they disappear mostly when lights out only to reappear when lights on?
 
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I’m sorry to hear. But it would help if we knew your parameters, and how old the tank was.
Around 4 or 5 months old, 300l w the sump, dkh 8.5
Ph 8.2
No3 10-15ppm
Po4 < 0.01, trying to raise to at least 0.03ppm
Nh4 0
No2 0
Salinity 35ppt

Also have a refugium running in an inverse light cycle, skimmer 24/7.

I'm really frustrated and worried about my fish, they all look good, but still it is worrying me
 
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Looks like dino. A decent sized UV sterilizer will help tremendously.
 
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I wouldn't say they dissappear but it seems to be less of an issue w lights off, I only use the blue and uv purple. What should I do?
 
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