LED lighting requirement for SPS
 

is this light good enough for SPS on a 120 gallon tank. 4ftx2x2

Product Description: Marineland Double Bright LED Lighting System: Adjusts 48"
.View ALL Marineland LED Light Fixtures - CLICK HERE! Marineland LED Aquarium Lights have a double row of 6K LED Daylight bulbs and a single center row of 60mw Blue LED's. Energy efficient 1-watt LED's produce 80 lumens providing a higher output than typical fluorescent bulb lighting while using less energy. - 6,000K one watt and 60mW blue LED lighting system

http://shopping.yahoo.com/875099316-...adjusts-48-60/

no

nothing marineland makes in terms of led lighting is capable of keeping SPS in a 24" deep tank.

We could probably go further and say nothng at $200 is going to be good enough :)

If your fish were going to read a bedtime book they would probably strain their eyes :)

but the fixture says it's "Double Bright" !!

I would wait until they come out with the new "Triple Bright" !! ;)

The one below may not be the best for SPS but it will be a lot more light (8600 Lumen) then Marineland's 1800 lumen light fixture.
Also this one below has OEM timer that can turn blue LED on first then whites, and turn Blue LED off last for dusk dawn effect.

However some people say that just Blue/White LED combo maybe not enough for corals (especially SPS) as they need full spectrum light available to them. From 420 nm or less, almost UV spectrum all the way up to 14k or even 20k whites including 450nm blue, red, sometimes little bit of Green, Warm White and Cool White. New LED fixtures are coming on the market now with full color spectrum adjustable features but they are pretty penny for sure. Maybe that is why you see some AI sol's for sale on here.

Example below will be most likely good enough for simple corals even SPS, but you may not get good color pop as with old MH HQI/actinic light.

Green Element EVO Quad Reef LED Light Fixture 48" (TR)
http://www.aquatraders.com/EVO-Quad-...TR-p/56263.htm
8640 Lumens


http://www.aquatraders.com/LED-Aquar...show=90&page=1
.

Really? Mine seem to be "surviving" with blue and white only..:razz:

Blue and white is fine. My tank ran a sol and I've seen plenty of frag tanks with sols

Just to add something (since I drooled over and studied full spectrum LEDs vs BW LEDs few months ago):

there's no legitimate proof that full spectrum helps coral growth. For now, people only still to it for aesthetics. Or maybe some study did came up showing full spectrum helps coral growth :idea: