This is my first LED grow, before that I only used HPS for the last 35 years or so. So, new strain, new lights and new room.
In my old room, I used two 1000 watt HPS for my many grows and I averaged slightly over 2 lbs a light. But sometimes the overall weight would be in the mid 50's oz and other times in the low 70's oz and anywhere in between. My all time high was 78-79 oz.
Basically at this point, I just want it to be over and done with so I have my final number and can plan how I want to proceed. And decide what changes I need to make, if any.
What's your total wattage in there now? I used to use one or two double ended HPS (1200 watt) that I used to use in the flowering room, I've been using the 4000 this time around (590 watts total), but I think I'm going to add in another 2 lights for late flower here once the hangers/hooks arrive. I've got 2 more lights that have pretty good flowering coverage (230w draw each) with RBW diodes. It's the Roleadro HYG05-200X10W-W series. That with the full spectrum IR/UV on my
BestVA's should produce some decent results, I suspect.
I'm seriously considering an "array" with the UV/IR paired with the samsung
LM301H diodes, as those appear to be the most efficient overall, and I think they might be around for awhile. I wouldn't mind putting up to around $1200 on a set, but I don't want to go over $1300 with taxes, that's my limit on any one light.
I'm probably getting 85-90% efficiency of those kind of lights, (on my current models) maybe more. But at $400 per set, I could buy 3 of them, and be cranking out over 2000 (real) LED watts. But heat becomes an issue again.
I really want a set with off board drivers, that can be placed in another room (to bring heat away from the lights). I need something that can come 12 or 15 feet off the lights, like my old 1200's w double ended HPS, that's the ultimate setup IMO.
With my 3000's, I'm putting out 900 actual LED wattage, and I'm covering 6x6, could be doing probably 7x7 footprint very nicely. I think with this type of lighting, adding in capacity "as needed" is idea. I've been at this LED game for about 10 years now, when people used to laugh at my setups. Dials and switches are the best way for most full range stuff out there IMO, because veg doesn't need all that red light whatsoever, but I run both bands in flowering. (including full spectrum whites). There's a lot of engineering into all this crap.