Brown algae on sand

[cliffhanger]

Hello I got all sand brown, where no hit lights sand is white and clean any help, sorry my English thanks
Aquarium it's new 50days rock come in, I got 2 clown percula 1 fire fish
NO2-0ppm NO3-6ppm NH3-0. Ph-8.3. Alk-9dkh

 

[d2mini]

Diatoms.
Normal stage of a newly cycled tank.
Should go away on it's own. You can stir the sand a little in those areas to help minimize it if you want.

 

[cliffhanger]

Hello
how long would disappear by itself?
Before has Dinoflagellates I brushed they left , now diatoms 30 days they appeared
Thanks

 

[ichthyogeek]

cliffhanger, when you do a water change, have you tried to siphon off the algae? I think I might have a similar problem to yours if the algae forms a "mat" on the sand, and when you try to suck it out, you peel off a layer of the sandbed.

 

[cliffhanger]

Hello,
Nope no waters change yet, I will try increase skimming a half photo period maybe remove layer on sand [emoji106][emoji4]