what's that algae?

[inspirestudioca]

Hi everyone these months i found something bad in my tank all coral looks not happy, but i check the no3 (Around 5ppm) po4 (Around 0.25)is looks ok, but the tank going bad it star from this year April. Now growing a lot this kind unknown algae. I think it will go crazy, what can i do, i need help! Thanks a lot!

 

[saltyfilmfolks]

Looks like green hair alge. What do you have for a clean up crew?

I'd pull that out and get some crabs and snails.
Are not to stir up the sand too hard , also put in time Dr tims or bacteria wha. You do it.

Are you using rodi?