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For some reason this black stuff is growing on my live rock. It consumes on of the neon green sponges I had growing and now it is spreading. I siphoned it out and it seems to keep coming back. Any help and solution would be appreciated. Thanks
https://uploads.tapatalk-cdn.com/201...bc00a12e2c.jpghttps://uploads.tapatalk-cdn.com/201...7885dee974.jpg
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Looks like either odd colored cyano or dinoflagettes. Google either for solution to your problem
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Looks like cyano to me.
Sponge maybe?
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cyanobacterial blankets create zero oxygen zones, that makes the surface turn black.
High phosphates, & or nitrates, possibly indicated.
Thanks I’ll do some large water changes and siphon what I can out to see if it helps
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It looks pretty, like a tropical sunrise
edit:: obviously this is a bit of a dead thread, just sharing my experience with previous encounters of similar looking growths
If it's hard to siphon out, a fresh water dip will help. Corals should be fine if they're only out for 5-10 minutes. Had to do something similar for cyano growth. I've seen this similar formation in green too - hard to say, but fresh water will do it. (I used straight up tap water, but RO or RODI will work too, spring water.. etc.)