Red algae or cyanobacteria

[Daoz126]

How do I get rid of this or find out what it is?

 

[SplishySplashy]

Looks like cyano to me. Can you blow it off with a baster?

Chemi Clean works wonders for cyano just make sure you read the instructions carefully.

https://www.bulkreefsupply.com/chem...q3X1c7Cwc8eNU_PueEZrdfHtVYYGNit8aArkcEALw_wcB

 

[vetteguy53081]

Cyano. You can blow off with turkey baster but also vacuum it up once loose.
ChemiClean very effective treatment !