Cree Reef-White 27W LED-Aquarium-Bulb? Good?

[MoreDakka]

Originally Posted by gobytron

Par38 bulbs like this have been around for a while.
I run my 12 gallon off of one of these bulbs.

There is a ton of info out there as to their effectiveness at different depths.

If your tank is 18" or shallower, these bulbs should do the trick.

My tank is a 45g, 36Lx 16Dx24H. Could I do 2 or 3 of those to save some money on a decent LED system?

Thanks.