Brown Sand.?

[bckane]

My tank is 2 days into cycle......My sand is starting to turn brown, is this a good sign or bad.?? (no fish)RO/DI water.
5 turbo snails

pH 8.2
Ammonia 0
Nitrite 0
Nitrate 10
Salinity 1.025
Temp 80

Lights are on 8 hours a day

 

[brndfrb]

sounds like a pretty normal diatom bloom to me. Very normal when you first strat a tank.