have you seem these lights

[lithivm]

Have you guys seen these type of bulbs? they are very powerfull, maybe these can be used for aquarium use. what do you think.

Energy Efficiency - Save up to 75% in electricity when compared to incandescent lamps and OVER 300% when compared to High Intensity Discharge Lamps
High Output - Rivals a 400 Watt HID lamp for use in growing plants
Long Life - 8,000 hours of rated life gives this grow light more lifespan than any other light in it's class
Compact Size - Small tube diameters and compact design fit more applications
Quality Tri-Phosphor Coatings - Provides high color rendition and consistent quality light output
Integrated Electronic Ballast - Provide for easy installation, reliable operation, flicker-free start and superior cold weather operation

http://cgi.ebay.com/105-Watt-Compact-Fluorescent-Grow-Light-and-hood_W0QQitemZ180224704990QQihZ008QQcategoryZ42225QQtcZphotoQQcmdZViewItem

 

[Phyl]

Are the temps on the right the colors they come in? If so the 6500K might make a good coral growth light (though I'm obviously not positive). They would make good grow lights for the fuge, though.

 

[lithivm]

I think 6500K is the highest they have so far. They will not produce the shimmering effect that MH lights do... but they are very powerfull and cheap.

I think for a frag tank or large sump these would Rock, even for a tank....

 

[Edwardw771]

i have 3 or 4 bulbs like this laying around. I got them from my brother in law I don't know what fixture they use. if you get a fixture i'll give you one to try

 

[lithivm]

These have a standard base like any other home bulb, yo should be able to get a porcelain base at a hardware store and use a reflector behind it.

Thanks for the offer... its a bit big for my 29G!!!

 

[chaoscat]

I looked at these myself awhile back. Couldn't quite decide, as the colors don't go above 6500. May try this out on my "soon to be" frag tank, just to see what happens. The prices sure seem to have gone up though, since last I looked at them.