Yesterday I was able to check out a friends room that has 3 gavitas and 3 SE 1000w and 1000w COBs. All the tallest plants went under the gravitas but the led and SE side started the same. The COB fixtures were hanging the wrong direction and much closer to the edge, so today he is going to center the lights up better and turn them the right way. Even with that disadvantage they all are on par with everything else, just shorter. Another thing I noticed, was the 3500k looked very blue next to the HPS, unless he has one with 4000k. I will have to have him check.
View attachment 3841083 View attachment 3841084
These rock for veg. I'm sure they're fine for bloom, too.He may have gotten a light with 4000k COBs also. He is going to check for me later.
BEWARE of matching those lux while using better spectrum lighting, lolWell, as you can see in the picture above, the light isn't hitting the top of the tallest ones very well. I made the mistake of putting the taller girls on milk crates thinking they would run up the wall more, but the barely stretched and now are getting less light up top. I didn't want to add more power, so I just bridged two more CLU058 3618 onto a HLG240. So if the math on the heatsink is right, I am only a 10*c above room temp. The taller 2 have 4 COB's @ 60 watts and 35*c and the other four are running @ 120 watts each and 46*c. I could say this is my most efficient run so far. Maybe I will add 4 more and have them all at 60w.
After a visit to a friend that runs both SE and DE HPS, I noticed he is at 200,000 lux everywhere, so that is the new target @ canopy for me.View attachment 3845557
I am only running 25w per square foot here. My friend is running even closer on five footers.View attachment 3845583
I'm running CXB3590 at 54W, four to a module, each of which pulls 225W. Four modules per 4'x6' trellis panel is encroaching on the ragged edge of too much light, and my next refit with these will see me using only 3 modules per trellis, for 28W/sq ft.His are also running @ 250w per COB and my hottest is only 120w.
I'd bet the difference would be so small as to be unnoticeable, or swamped by other variables like ventilation, strain, etc.half of that section is 168lm/w and the other half is 180+lm/w.
I'll find out soon enough lolThese rock for veg. I'm sure they're fine for bloom, too.