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Is this enough light for my final pot size?

Discussion in 'CFL / Fluorescent Lighting' started by Mo9000, Oct 23, 2017.


    Mo9000 Member

    Hi guys, I'm doing a cfl grow and I wanted your opinions on whether my lighting will be sufficient for my desired final pot. My final pot is approximately 7 gallons and i have about 340 watts or 18000 lumens worth of cfl light, spread between 4 45watt and 8 20watt bulbs. I am also topping and LSTing my plant to get maximum efficiency out of the cfls. So do you think this will be sufficient lighting or is 7 gallons a bit ambitious for a cfl grow? Any help or advice is greatly appreciated.

    SPLFreak808 Well-Known Member

    50 actual (not equivalent) watts sq.ft would be around the minimum with cfls, more would be better if you could keep it cool.

    7 gallon pot is a bit big, but not if you got enough light/veg time. Fwiw, i use 7's under 1000w hid.

    50w sq.ft examples

    2x2 - 200w
    2x3 - 300w
    3x3 - 450w
    4x4 - 800w

    Mo9000 Member

    Cool thanks man, by the way I'm doing a closet grow and my space is only about 2x3ft do you think a 7 gal pot is too big for that sort of area?

    BudmanTX Well-Known Member

    how tall is the area your working with?

    Mo9000 Member

    Oh thanks man, but ive actually since decided to use a 3 gal for my final pot and my area is about 6 feet so height definitely isnt a problem.

    BudmanTX Well-Known Member

    cool, i was gonna say right now i'm doing a test on pot sizes in closets, i got the same pot size you were thinking of working with, and a heavy sativa strain in flower now, its about to run me out of the closet that i'm in. The other is in a smaller pot and it looks like it gonna work for the space i'm woking with. That's why i asked....

    Mo9000 Member

    Oh damn, yeah that's the biggest concern I had with using that kind of size pot for a closet, which I why I decided to go with the 3 gal, also cuz I'm growing in coco, so plants can grow big in small pots,, how tall is your space?

    BudmanTX Well-Known Member

    mines about 7ft total, but with the shelf and the rod it take out about 1ft 1/2 so a little over 5ft....the plant right now is just under the light about 8" bellow + or -, haven't measured it in a while, but its in flower don't expect for it to go past, but its close.......

    Ludi Well-Known Member

    The thing with cfl is the problem with lightspread, if youre going vertical with several lamps youre gonna do just fine.

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