LED Intensity

[StirCrazy]

Originally Posted by troni

I'm curious as how long till the spectrum starts to change, if at all.

the spectrum doesn't change on LED's only there intensity. and at there rated live they are usaly still at 85% of there new intensity. of course different brands/models will have different numbers.

as for the life span, running them at 50% or 100% will make no difference on life span if the junction temp is the same, so in other words if you can keep them below there max junction temp even at 100% the life will be longer. this is why it is very important to think out your cooling (heatsink/fan) setup when building your own LEDs. If you buying them you would assume the company did there home work to be able to allow them to be run at 100% while keeping the junction temp under the max.

Steve

[Finisher604]

I have a 6 ft tank with mixed sps and some LPS. I am running only 2 ai Sol, I run the lights from 8am to 12am slowly ramping up.

At 5 pm my lights run at 55%white 75 both blues till 8pm any brighter and things get upset, i don't have a deep tank and have the lights about 10inch above water.

Everything is growing amazing in my opinion.