Algae and phosphate?

[Smite]

I'm uncovering my tank tonight after 3 full days. Any special instructions for after care? Water change? Less light then usual? Etc?

I usually only run actinic lighting the first light period if possible, but I've skipped that and been fine as well.

Glad it worked for you. Hopefully they stay gone.

My sps bleached before the blackout, I think from the dinos stripping the water of nutrients but that's just a guess.

 

[lowbudget]

less light

 

[5ft24]

Dynos are cause by silica. Silica is a type of phosphate.
But even tho your tds is coming out at 0 that doesn't mean the phosphates in your di water is at 0. You can still have phosphates in 0 tds water.
I can guaranty that's what your dealing with. Your ro/di system is not taking out the silica in your water and your dumping that into your system. U will need to use gfo to get the silica out of the tank and silica buster filters to get it out of your ro water

Actually, no. Dynos aren't anything to do with silica. You're thinking of diatoms.
And silica isn't a form of phosphates... Silica is silica, based from silicon dioxide. Phosphates are based from phosphorus.

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[Jamess]

A blackout wouldn't do anything to remove the actual food source of the problem. All it'ss do is annoy your corals. Consider a sand vacuum and large water change of sump/filter. Increase water flow. Check out the algae program by Red Sea for a natural method of exporting nutrients responsible for algae growth.