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Tutorial to Growing with Cfl's

Discussion in 'CFL / Fluorescent Lighting' started by Dr.Chronic, Sep 9, 2008.


    rob333 Well-Known Member

    what blows my mind is that cfl threads are still going u can get leds that are way cheaper the do the job 10x better ;)
    Tim Fox, churchhaze and TubePot like this.

    rob333 Well-Known Member

    or were i am u can get cfls at 42-60 80 and 100 w for like 5 bucks for the 42 and about 25 bucks for the 100

    rob333 Well-Known Member


    weednurd420 Well-Known Member

    So that's a yes lol, I had my room around 67 when my ac / heater in my house stopped working and under the CFLs it was still like 85 so I take it that's normal for plants to have warm spots with cfls

    weednurd420 Well-Known Member

    What I don't get is they say to keep them 40 w cfl 1 in away from plant but when I do that it gets 90f its 85 f at 5 in away not the hole room just the spot under the light but my buds like it noticing leafs look over watered but I think its the heat

    B166ER420 Well-Known Member

    In my experience those higher watt bulbs do get hotter than the more common 23-26w bulbs,so I wouldn't put them that close.If you can't touch the bulb without burning,theyre too hot to use imo.90f at the tops near the light is ok as long as you have good airflow and exchange.Some strains are just more heat tolerant than others.

    That's just about where i'm at and i do ok:).About 90 at the lights and about 78-80 on the floor.

    B166ER420 Well-Known Member

    I remember you said you use 2ltr bottles for containers?Me too:).I've noticed that the top of the soil will be dry but down deeper it's still wet.I just put a couple slits with a razor down the sides at the bottom to help dry out.I usually water every 3-4 days,more frequently the bigger the plants get.GL

    churchhaze Well-Known Member

    Tim Fox and weednurd420 like this.

    weednurd420 Well-Known Member

    it said cfls have infrared light in them and its bad for flowering.... i wonder why advance puts infrared in there led lights then and say its good for plants

    c_toke_420 Member

    I am running with cfl'$.thanks for the info,well check out those sites,happy 420

    LeMrMagu Active Member

    how far should i hold my 250w 15k lumens, 2700k cfl lamp from buds (scrog) ?
    now im holding it at about 20centimeters (7-8'') away ..

    RobDeNiro New Member

    Even less than that bro. If u have good ventilation u should be able to have it at 3-4" awat
    Rico jones

    Rico jones New Member

    New to growing , need help with finding the right soil for my autos seedlings.
    Hybrid Ninja

    Hybrid Ninja Active Member

    Hey what do you guys think, three 250 watt fluorescent lights for three plants, two indica pures, and one 50/50 hybrid with regular potting soil in 10 gallon containers, with six feet of grow room, and super cropping all of them on the main stem once? I'm a noon fyi
    emerald forest

    emerald forest Member

    I have grown with CFLs because I can't use hot lights in the space I have. But I noticed that my buds were not very dense at harvest. Good quality, but low quantity/output. Is this common with CFL growers?

    SPLFreak808 Well-Known Member

    Going to retire my 40 watt CFL bulbs and replace them with 35 watt HID's. 3500lm>2200lm radiant heat went up, closet temps went down 280watts>320watts. Ill report back if i can smoke my 23 watt cfl's .6 gpw

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    churchhaze Well-Known Member


    SPLFreak808 Well-Known Member

    yes it is. Airy buds below is from lack of penetration from the lights. Airy buds up top are from the low light + heat coming off the cfl's because they are soo close. Have you tried a 250hps?

    86Hemphill Active Member

    The OP stated not to pay attention to the equivalent wattage and go for actual wattage. I had no idea about that. Going to see how high of wattage I can get tonight and bump it up some!
    Blunted 4 lyfe

    Blunted 4 lyfe Well-Known Member

    Love it wow how indepth this!

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