Too Much Light for 75 gallon tank

[tyreeftank]

Is two 250 Watt Metal Halide too much for 75 gallon tank? It seen to kill all of my coralline from the the live rock.

[sedor]

Sounds perfect to me, that what I run :) Is there glass under the bulbs. Sometimes that is there to protect from UV rays. Its been known when people removed the glass or it got cracked to bleach corals.

[scottwhitson]

I run 2 400 watt halides on a 75 so 250's shouldn't be causing your problems.

[ReefTECK]

yeah no problem there, I'm using close to 800 watts on top of a 7 with metal halides and VHO T5's combined.

[tyreeftank]

Sedor, yes there is glass under the bulbs. Thanks for the feedback.

[derek4real]

glass shield is only needed on DE bulbs.

[mrbigshot]

Coraline hates light, good news is it will usually come back in a different color that like the light more. usually a pink or red.