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Planned downtime on Friday, July 20, 2018

Hello Forum Members,

We love all the awesome pictures that you have been uploading, but we started running out of space to hold them all. In order to increase our storage space, this Friday the growing community will be down all day for planned upgrades and backups. We should be up and running again for the weekend!

Happy growing,
Nebula & Sirius
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HPS lights

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    HPS lights

    What do yo think about these lights? https://www.amazon.com/Sunburst-SBMM...=150+hps+light

    #2
    I'm thinking of 2 of these instead of a 250 watt setup

    Comment


    • St.buds
      St.buds commented
      Editing a comment
      Why not just one 400 watt?

    #3
    Hey foghead, probably be ok for about an 18 x 18 inch closet or tent.
    Cfls for a week or two
    315lec for everything else
    Dug up Ms.topsoil, with perlite added
    36x36x63 inch tent.
    6inch - exaust - intake fans an scrubber
    Smart pots
    Molasses
    Autoflowers

    Comment


      #4
      What’s your grow space looking like foghead?
      1st Grow: 2 Nirvana NL’s, FFOF, FF Trio nutes, 3x3x6 tent, 3 gal pots = 6.86 oz dried
      Current Grow: 1 HSO Blue Dream (germinating)

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        #5
        I ran 2 150's. Was OK for 3 short plants. I think you would get less heat with 1 250 though.

        Comment


          #6
          U want 60 watts per sqf if u have more than 60w per sqf u will need to add co2 or ur plants will get light stressed. U can always move ur lights further away but then ur wasteing energy. So depending on the size of ur room that will depend on how many lights u need. U wount have to worry about to much heat because it will be controlled tho the hood make sure ur fan is atleast 5times stronger than u need and u wount have any issues, u can wire it onto a normal house dimmable switch and then u can self adjust the speed u need. This method works awesome for me. (cost for a house dimmer 20bucks) (cost for an actual hydroponics fan dimmer 200bucks). Sorry for the long reply, but if u did wanna add co2 in a small room I would recomend the exhale c02 bag u hang it and forget about it for 6months (cost 40bucks) supplys 500ppm per 4x4x4 space

          Comment


            #7
            Note that the Q&A says these are not full-spectrum and should not be used for the vegetative stage. The HPS bulbs I've been seeing are 2100K (same as a "Cool-White" CFL), which supports that.
            First-time California outdoor medical backyard grower -- Aurora Indica Feminized plants in soil.

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