another day another led array
- Thread starter jfl14609
- Start date
dgodwin
Member
If you're shooting for a 1:2 ratio of whites to royal blues, as in your later post, I think you mean 24 rb, instead of 12.
I was thinking the same thing. I was thinking about doing 54 over my 75 gallon. 9 cool white, 9 neutral white, and 36 royal blue, on 5 drivers.
der_wille_zur_macht
Team RC
Yeah, 24 total, 12 on each driver.
Again, it really depends on specific LED models and bins, plus drive currents, optics, and heights above the water - rules of thumb that don't account for all those factors are going to be really misleading under different conditions. My 360g pretty much defies every rule of thumb out there, and if I told you guys how few LEDs it uses you'd probably think I had a few screws loose. But it's working to the point where I've actually killed a few corals by accidentally bleaching them. Same with the 60g I had running prior as a temporary tank. LED count is really only one factor in the big picture, and can be an insignificant factor, depending on other factors. Yet, when you hear people talking about sizing LED arrays to tanks, LED count is pretty much the only factor that gets discussed.
Dimming a larger number of LEDs than you "need", or running them at lower currents, is great, and will theoretically result in longer life and possibly better efficiency (at the LED itself it will almost certainly result in better efficiency, but depending on the driver you may get worse overall efficiency) with the obvious drawback of costing more upfront.
jfl14609
Active member
Ok so i am having a mental brain fart I currently have a 75 gallon tank I am planning the light for but there is a possibility I will upgrade it to a 90 or 120 so i am thinking I should build for 120 then use the most awesome dimming feature to use on the 75. now what do you guys think should I do that or just build as planned and add maybe a 4 foot rail or two if i upgrade
How many LEDs are you planning per rail now?
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