first keep in mind recommended max for the entire chip is 700mAFirst, let me say I’ve read a TON of threads here on DIY LED stuff, but I haven’t found anything matching my goals.
I have a 48x18x18 tank (64gal) currently running a Fluval 3.0, which I have decided to supplement with a pair of DIY LED pendants. Depending on how I like the pendants, they may totally replace the Fluval. Growth is great with the Fluval, but I’d like a bit more intensity at the substrate to get stuff to grow bushier. I’m also looking for better coverage; my Fluval leaves a big dark spot at the surface. My primary goal is to make the plants/tank look nicer. I find the Fluval doesn’t have enough punch in the red channel for my taste, so I’d specifically like more power there. I’m also looking for a bit more shimmer/caustics.
I'd venture to guess that for viewing you will use, at most, 1/2 of the warm channel, BUT is is personal taste.
So balance drivers accordingly.
For example 300mA on warm, 500mA on cool will exceed the 700mA recommended max rating..
Best would be current adjustable drivers..Maximum Drive Current is maximum combined drive currents between both 2700K and 6500K channels. For example, if 700mA is applied to one channel, no current may be applied to the other channel of the array. If 300mA is applied to one channel, then a maximum of 400mA can be applied to the other channel
see Bluacro as an example:
New v2 Design: Same shape, more robust protection! Our latest creation to complete your LED build! Made in the USA, this is an all-in-one LED driver similar in function to the Meanwell LDD drivers, in a much more compact size and not requiring expensive carrier boards or plug in modules - its...
Ideally you would like like 200/500 ww/cw but again personal preference.
25W a chip at combined 700mA 36V
110L/watt approx (all broad estimates)
2750 lumens for full power on the chip.
Tuneable chips are a good idea on paper but personally I find them a bit cumbersome.
Would LOVE to recommend them but it gets difficult. Form factor is great, specs are a bit difficult to design around without a bunch of waste.
Like say 350mA per channel but you only run one channel at 50% for looks..19W total in real life 2000 lumens each.
Point is you sort of have to design it baed on what you "think" you will like the best or over-build (more chips) than you think you need.
As to color additions.. 660nm red is really the only necessity w/ good high K high CRI whites, In my "opinion"