What is this thick red algae

Deltec

ReefNewbie12

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Yeah, I got no words here, it seems to have sprung up randomly (like all the worst algaes do) and didn’t appear near a frag or anything, what is this? Is it some sort of super-cyanobacteria? Will it harm my corals or snails? (I’m afraid the latter would probably eat it regardless) And most importantly, if it’s not cyano, how do I get rid of it? It’s growing on both the sandbed and the rockwork.
 
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