Sand algae

[tidefanjam]

My tanks been up more than 2 years, I’ve had this brown algae on my sand for the past month or so, I’ve siphoned it out and it just comes back.
Parameters
Phosphate.03
Alk 8.7
Nitrates 2.5
Cal 415
Mag 1360
The only thing different is I changed from reef crystals to hw marine mix reefer salt anyone had outbreak from changing salts.

 

[Casket_Case]

Sand sifting Goby?

 

[tidefanjam]

Sand sifting Goby?

I don’t have one, I have thought about getting something to move the sand around, a conch or something

 

[Casket_Case]

I don’t have one, I have thought about getting something to move the sand around, a conch or something

Yeah, if you have coarse grain sand I’d get a snail. Finer grain, I’d get a sand dollar.