Diatoms again?

[ReeferPat]

The last few days I’ve gotten what looks like diatoms on my sand bed. Always gotten a slight brown dusting on glass and sad but I’ve seen a significant increase. Is this something to worry about? Maybe a new cycle? All corals (LPS and SPS) seem to be doing great but zoas are slowly melting.

40-gallon AIO cube. Tank is about 10 months old.

1.026
Temp: 76-77.5
PH: 8.2-8.4
All: 8.0-8.2
Calc: 440-445
Mag: 1440-1460
Pho: 0.5
Nitrate: 5

Light: Kessil A360X, 60% intensity, 40% color (photo period 12 hours with ramp up/down)

 

[vetteguy53081]

It can return. As I do,,,,,, add .5-1ml of hydrogen peroxide per 20 gallons nightly when lights go out

 

[ReeferPat]

It can return. As I do,,,,,, add .5-1ml of hydrogen peroxide per 20 gallons nightly when lights go out

What exactly does the hydrogen peroxide do? Will it affect corals?

 

[vetteguy53081]

No effect on coral and it starves the diatoms of its' food source

 

[Bmckinney04]

Does the hydrogen peroxide really work?!? My tank is 7 months old and the diatoms came and went then BAM they're back hardcore... Will this seriously work, I have to clean the glass twice a day just so I can see my coral

 

[vetteguy53081]

Does the hydrogen peroxide really work?!? My tank is 7 months old and the diatoms came and went then BAM they're back hardcore... Will this seriously work, I have to clean the glass twice a day just so I can see my coral

day 11, and haven't cleaned glass yet but by Tuesday I likely will

 

[Michael Gray]

does Hydrogen peroxide work for Turf algae or hair algae?