Is 250w mh to much for my 29g reef?

[Myka]

Originally Posted by Trigs

how about a 30" w x 30" L x 18" H sounds like a pretty good size dunno how many gallons that is though...

That is 70 gallons. Personally, I wouldn't use a DE bulb over a 30x30". The only bulb I would use over that would be a SE with either a Lumenarc or LumenMax reflector, and only if it was overdriven by an HQU ballast, otherwise your light won't reach the edges. With your DE bulb I would suggest no more than 24x24", but 22x22" would be even better.