Whats on my sand??

My sand is looking strange with rusty colors

 

diatom algae, try getting a clean up crew.

 

got one
six hermits, six snails, no shrimp
should i get more???

 

will phosGuard work???

 

i have the same in my sand, plus all over my rocks, but i'm still in the cycling process, i think it will also go away over time

 

I agree with the above responses. It's likely diatoms. They feed on silicates. Fortunately, unlike phosphates; silicates usually experience a peak, followed by a sharp decline, followed by absence over time. This is provided you don't add more silicates to the tank. Silicates can be added through tap water, silica-based sand, and even the plastic that makes up our piping and other components of our tank.

If you focus your energy on maintaining your other parameters like mag, calc, alk, salinity, pH, etc., you'll probably find this rust colored inconvenience to eventually disappear nearly as fast as it appeared in the first place. Clean up crews will do little if anything to rid a tank of diatoms, as they don't address the diatom's food source: silicates.

Are you using RO/DI water?