Red Slime? Please help to remove this

[N64]

I purchased this tank second hand, when I moved it and set it up, after about 2 weeks this started to show up and only getting worse. Please help, thank you for time and infomation.

 

[N64]

Should add, I have no carbon or GFO, if that matters. I tried keeping everything he had. Should i add some?

 

[Tamberav]

It looks like cyano...

what do you do for weekly maintenance?

Have you tested PO4 and Nitrate?

Did you keep the original sand bed? it might be filthy.

 

[nereefpat]

That really isn't that bad. Just siphon it out.

 

[Jeffcb]

Should add, I have no carbon or GFO, if that matters. I tried keeping everything he had. Should i add some?

It dose look like Cyano....
Siphon what you can with a large water change.
Increase flow.
Cut lighting hrs. and intensity for a little while.

Cyano can out compete the good bacteria so I would not add GFO. Carbon is ok. What is your Nitrate and PO4?

 

[N64]

This is the light schedule I imported from him. Which seems really high? It's a red sea reefer 170. Single ai prime 16 hd.