Johnny Lawrence
Well-Known Member
^ this is actually good advice.
Best light setup for yield 20×20 room
- Thread starter Jimmy Verde
- Start date
ttystikk
Well-Known Member
This would fill half the room if each one lot a 5x5 area. The rest could be storage and aisle space.
No way you're running those without AC.
Toohighmf
Well-Known Member
Honestly. Not yet, but I read about the par values a lot. Those numbers at the corners ain’t shit without overlap or a tent reflecting all 4 sides of a 4x4.
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Toohighmf
Well-Known Member
I’d say jump on it and look for another 8... that room can handle it if you properly air cool it and add a decent 3 ton AC, or several (4x 750cfm intake fans) blowing through through a dust shroom above the duct lines to positively pressurize the room with dry 30-40F air. I’d still have a thermostat controlled AC to keep things consistent if/when things do heat up. Murphy’s Law = indoor grow. Preparing for the worst is something every grower should be doing.
Why assume only 1 per light with those lights you wouldn' be running an efficient space with less than 14!! Good luck btw!!
andy s
Well-Known Member
ive chose to ign
right which was gonna be the layout of the room, you achieve a good number by cross lighting with the 315, in return double the area almost for 30 extra watts every 2 fixtures
andy s
Well-Known Member
stated he should get over the 1 per light for sure bud. some people can only get 1 per light, others get 2 or very close
Toohighmf
Well-Known Member
I still don’t think cmh penetrates like a QB. The lower you hang a cmh to the canopy you risk heat and you shrink the coverage. Overlapping QB’s have higher PPF than cmh and you can lower with great coverage. Though coverage with 2 315’s over a 4x4 might do it with higher temps..
andy s
Well-Known Member
i think 2 315's in a 4x4 is overkill
since1991
Well-Known Member
I been looking into this lamp. The specs and numbers are unreal. Just mind blowing. Lower a little more in price..this could be a game changer. Any good threads on the hlg 550? Sounds too good to be true.
