any LED experts?

[dirk_brijs]

would these lights do for a reef tank?
And are they dimable?

 

[kcress]

No and probably not.

 

[dirk_brijs]

Idea would be to set 2 panels like this and 2 equaly large panels blue
would also add some T5 to it

 

[evilc66]

Still not going to cut it. Your tank would look like a blue and white checkerboard.

 

[SpacedCowboy]

If the power is 13.8 watts, and you have 225 LEDs, each LED is a tiny tiny power output. The LEDs we're using in the DIY arrays are 3 watts each...

Completely useless, IMHO.

Simon

 

[hllywd]

Gotta agree after my reading of the pertinent threads... NOPE, won't work. No free rides here those just don't have the intensity, or efficiency for our application.
Tim

 

[Mustang Boy]

Idea would be to set 2 panels like this and 2 equaly large panels blue
would also add some T5 to it

whatever T5s you add to them will be doing your tank more good than 4 of those panels combined

i say go the DIY route you will need less than a quarter of the LEDs than the number of LEDs on 4 of those panels and will have a TON more PAR and be able to actually grow corals

 

[der_wille_zur_macht]

It all boils down to efficiency. A really good HP LED can be above 100 lumens/watt. An average HP LED might only be 50. A junk 5mm LED might be 20 or worse.

So, if you're looking at commercial fixtures, don't waste 5 seconds of your time unless the make/model/bin of LED is advertised, or the fixture is being sold by a very well trusted vendor. Sadly, this rules out 99% of LED fixtures out there on the 'net.