Completely ridiculous algae bloom

[x HEAVYHITTER x]

So, I have changed 1,000 gallons of water manually in the last 3 days and am still left with this▼▼▼▼▼

I accidentally left the lights on over night one night and woke up to this. It literally happened over night. My normal water change schedule is 200 gallons twice a week. It is a 250gal tank with a 75 gal sump. Nitrates are never over 20ppm in this tank. Should I be worried about ph changes? So far water params have not changed except nitrates being almost zero. I have a UV sterlizer on order but, is there anything besides chemicals and shutting lights off I can do in the meantime? Using chemicals for this tank is not a option for my black rays.
Also I use 2 50miron 7x16 socks that are changed every other day. I have never had an algae problem before. No idea where to start.
Any advice is appreciated.
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[snake8myelbo]

Damn! That's bad. I would just wait for the uv.

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[strollo22]

Just leave the lights off and stay with your normal water change schedule until the uv comes in. Not much else you can do until then without chemicals.


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[UnstoppableJayD]

Wait for UV, Not harmful. Probably worse to continue outrageous water changes/chemicals.

 

[F1 VET]

Algae scrubber will help tons. Also a stable light cycle, use a timer.




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Cheap way to decrease nitrates and keep your fish healthy: http://monsterfishkeepers.com/forums/showthread.php?t=504763

 

[Daonni]

Ya leave it be. Completley harmless, just unsightly. Your UV should take care of it if it is enough wattage.

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[Yoimbrian]

I kinda like the look




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[ragin_cajun]

Yea, me too. it's a really nice shade of green

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[xraycer]

On the positive side, nitrate is at 0

 

[blindkiller85]

It's green water. Nothing to be worried about, breeders actually love it because the fry will eat it and become healthy as can be with minimal loss.

Personally I would do more like 75-100g water changes weekly for your setup (23-30%). Your schedule is crazy. If anything do small WC's after feedings. Vac the poo, excess food and done. Thus reducing waste buildup and your nitrates. With your WC's your losing some beneficial bacteria believe it or not. Not enough to ever cause a spike, but some none the less. Everything that's in the tank below water will have some bacteria on it, substrate, glass walls, filters, everything. Doing those WC's is nearing the same way that people do WC's without a filter at all.