HELP!! Diatom issues

[geraldegivens]

Hey Reefers-
My RedSea Reefer 250 hit the 3 month mark today.

-All of my corals look healthy and are growing
-My water parameters are on point
-Using RODI water
-Phosphates almost inexistant

However, I cannot seem to rid my sandbed of these dang diatoms (at least they look like diatoms; pictures provided below). I will siphon my sandbed and literally within 12 hours, diatoms will have covered my sand bed again as if nothing was even done. Water changes don't solve the issue.

I am thinking my tank is still going through a mini cycle and is still balancing things like silicates ... but I am not sure.

Any suggestions would be greatly appreciated

 

[saltyfilmfolks]

A mini cycle is a re release of ammoina. Not related.

Some folks do get silicates that slip by the rodi, but it’s possible it’s just the new sand.

Generally it fades on it own. Ugly stages vary.
Several members benifit form running GFO, it pulls silicates. Either in a reactor or in a mesh bag on the return pump inlet.

 

[Dana Riddle]

Biological control is best - try one or two tiger conchs. Worked wonders for me.