In a 75cmx75cm (or 30”x30”) you can really only do 1 full size plant (~60cmx60cm) otherwise you are crowding them. A 135W would only light a 60cmx60cm space but a 260W would be overkill for a 75x75.
Not sure what to do for now. The falloff from this light seems huge, and by the sounds of it my whole grow area is gonna be crammed. Maybe just plug on with what I have and treat this as a learning experience?
Next grow I’m planning DWCS so maybe that would be the time to change things up a bit once I’ve made a few more mistakes
I’ve topped mine once, maybe I’ll do it once more then ScrOG training. But now I’m worried about my light. More research for me I think Wish I could have a bigger tent!
With a single plant and single QB288V2 you could easily yield 5-7oz(150-200g). Maybe even more depending on the strain. That’s quite good considering your space. Will payoff a new light in the first grow.
Another option would be a DIY Samsung strip light set up to cover your entire 75x75.
This thing says its suited to 75x75. Any advantage to that over the QB? Might look into a DIY board and see what price that comes up as. Thanks for the info, that is probably the way to go
Problem with those ad’s is they leave out crucial information. What is the efficiency of the LED’s Yes you can push 240W through a light like the one you have, but you may be only getting half the efficiency of the Samsung LED’s in the QB’s. They get ~ 2.5-3 joules/Watt. Lower efficiency LED’s will just generate heat.
Where are you located? @dbrn32 may be able to direct you to where you can buy components for a DIY setup. If you are handy, (cutting, drilling, screwing, bolting, wiring) then DIY is the way to go. Save 30-75% over a premade light.
This is a DIY strip light (~200W) @DoobieNoobie did with 8x SI-B8U261560WW strips. This may be perfect for your setup. It uses the same Samsung LED’s of QBV1.
Can be obtained from Arrow Electronics in the UK for £11.94 each. You would need a Meanwell HLG185H-C1050A @ £36.79 also from Arrow. You would need to cut and frame together aluminum U and L bracket. And 8 strips would generate ~35K lumens about perfect for your space.