Brown algae on sand, what is it

[WallysWorld]

Moved this tank 4 days ago, new sand and probably 40% new water. I need to test water. In the meantime what type of algae is this on the sand?

 

[mta_morrow]

Diatoms. Feeding off the new sand excess silica. They will go away on their own

 

[WallysWorld]

Thanks!

 

[mta_morrow]

Thanks!

You’re welcome!

 

[motortrendz]

Yup diatoms. Just keep an eye on it it it turns red and slimy, then cyano