with no lights

[acecool]

What's the longest you went with no lights and corals lived to tell?
I had 40Watts of light over my 180G-reef tank for 7 days and counting and corals have started to not open much...how much longer can they go with no adequate light? Does anyone know?

 

[reefland]

Obviously depends on the types of coral and what kind of energy reserves they had. Seven days is pushing it.

What happened to your lights? Why only a 40w light? What is holding you up from getting normal lights back?

 

[reefsRcool]

umm can i ask why?

 

[Anonymous]

When you restart your lights you will need to reduce the photoperiod to about 4 hours per day to prevent bleaching of your corals. I would cut it to 4 hours then add 1/2 hour per week until you get back to you previous photoperiod.

I agree with the previous post that a week is pushing it.

Louey

 

[monkeyboy]

Whoa, a week with effectively no light is not good. If you're waiting on another light, you better get it overnighted to your house or you're looking for trouble. Louey has a good point, you'll have to re-aquaint your corals to the light or you'll just have much more substantial bleaching. Good luck and get some light on there!