TIME FOR NEW LIGHTS !!!
My GEN-1 was a DIY T5+LED hybrid on my 55G tank.
Nice light, and sold it after getting rid of the tank.
My old GEN-2 lighting thread is here:
http://www.bareefers.org/forum/threads/improved-color-led-thread.10227/
Hard to believe it has been 6 years now.
Two problems:
1) Two drivers and 3 LEDs have died, and I can only turn the rest up so far.
2) By today's standards, the color spectrum is antique.
So while I could fix it, why should I fix something that is that old and out of date?
As reference, my current tank is roughly 8' x 2' x 2'
I really really really thought about a T5/LED hybrid.
But the hassle is simply not worth it for me.
In fact, the hassle of a full-DIY is not worth it either.
The plan is a partial BUY / DIY all LED system.
PART 1:
The "BUY" part will be 4 x Kessil A360W. Yeah, boring and simple.
Each is 90W at the plug, so a guess at 80W of LED lighting.
So 320 Watts.
I really do like their technology!
It is hard to beat, hence not really worth the effort of a full DIY system.
The AP700 is tempting, but the spread on an 8' tank would be all weird, and there are controller issues.
Using 4 x Radeon XR15W-Pro is also very tempting, but no Apex/DIY-controller interface.
BUT: What I do not like with Kessil is all the shadows. Point light sources are both good and bad.
And 4 alone would me marginal for my tank.
So it needs more.
PART 2:
The fun "DIY" part will be a set of 14 or so clusters.
This section fills in the shadows, plus adds even more spectrum.
Each cluster uses two 3-up stars.
3-UP Mains
Cree XT-E Neutral White R4
Cree XT-E Royal Blue Q04
Cree XT-E Royal Blue Q04
Run at 700mA, so 6.3W
3-UP Color Fill
Deep Red: 660nm is 2.2v @700mA
Turquoise: 495nm is 3.5v @ 700mA
Cyan: 470nm is 3.5v @ 700mA
Run 500mA, so 4.6 W
I can get those solder-less from ledgroupbuy.
With 14 clusters, that is about 150 Watts of LED
Both parts will be dimmable, and certainly will be dimmed, since 470W is too much
for my tank. I would guess 2/3 Kessel and 1/3 DIY at the end.
Power is overkill, but it is hard to get good coverage any other way.
A rough drawing.