Makes sense, two overlapping 50% make a %100.
1 Like
Those DE lamps are BRIGHT 
. Canât imagine 100 of those running in one spot. I have a few and there blinding haha
1 Like
lil back I read they were almost too hot deal with non commercially so I never gave it much thought. Grow-light so bright, He has got to wear shades. 
This page sorta explains some of the reasonings. I dont know anything about them or what theyâre selling. I just went looking for a picture showing overlapping grow lights.
2 Likes
Coverage angle of the lights, they overlap. Also it keeps the heat up high away from the plants.
3 Likes
Wow no wonder corporate cannabis will boil down to 2 companies. Surely at cdn. wholesale, these grows are going the way of the dinosaur in less than a decade. Too much overheadâŚohh Iâm on a rollâŚsry
4 Likes
I think itâs going to be balls to the walls here shortly with federal legalizationâŚHoping
3 Likes
You can deal with them in a home grow. Ceiling height is the main consideration. Heat isnât much different than a standard bulb.
1 Like
But are the pictures of those lights have leds or bulbs?
2 Likes
If you are using multiple Double Ended Hid lights, which they are, you have to keep them at least 3 to 5 feet above the plants to prevent heat pockets.
6 Likes
the way I understand it isâŚ
commercial grows arenât looking for maximum yield. theyâre looking for maximum efficiency.
(read: profit)
fast-finishing, heavy yielders under just enough light. (read: cool-able)
1 Like
DJ Shortâs always been a big advocate of keeping the lights powerful but really far away 
I remember somewhere he described his ideal setup as a gymnasium with ultrapowerful lights hanging way above.
3 Likes
It Varies, one is for sure L.E.D. A double-ended was spotted as well.
as long as the plants donât get far spacing branch nodes, I am for it.
I used to work in building maintenance. If a building is being retrofitted with lighting the architect may just have the leds mounted where the previous bulbs were mounted as a cost savings. They just specify a low angle light to replace the previous one. So manufacturers would design lights for that purpose. I would not put too much stock in some pictures without knowing the details.
1 Like
Funny, I was just wondering this myself today while scanning through IG on the shitter. Always figured they just maxâd them out up high, so they didnât have to worry about micro adjusting.
The other thing that got me today, was all the rockwool and drip trays. Big plantâs but no roots running wild! They only look to be 6 or maybe 8 inch blocks/cubes, how do they keep the plants so big in such a neat and tidy cube?
6 Likes
Commercial grower for rec market since 2016
In our experience it is max yield to how much your electricity costs a month. Theyâre up high to prevent burning your plants, pair of 1200w DE over a table can cook your plants, keep your lights just out of that range for the strain, the hvac will take care of heat pocketing if your fans are working properly. As for node stretches, thatâs primarily genetics or a dying bulb/too high for strain.
Take this as you will this is just my personal experience for indoor.
10 Likes
At the end of the day there is only so much light the plants can actually absorb before being bleached or fried. Some of these commercial sets ups usually are professional done to give the plants the maximum amounts of light. Any closer would probably damage the plants. In a greenhouse you have to also factor in the ppfd of the normal sunlight too.
3 Likes
hard to tell scale especially with out a floor tile lol
1 Like
In veg you get huge creeping roots in the drain toughs, they die back in flower due to light usually. Cubes are more about flooding the feed on a frequent basis so you need a less larger root mass. Trade off is youâre growing so quick in hydro you donât have time to develop huge root masses outside moms.
4 Likes