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Thread: metal halides

  1. #9
    Nepenthesian Nepfreak's Avatar
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    Well... I can't really afford to put it just inches away... Nepenthes vine, and they're tall. I will have a cooling system. I'm going to do what rlhirst did, get a shower, put it in the coolest part of the house (unfinished basement, always in the 60s F at the highest, 50s at night) and have an inline fan sucking air out the top and shooting it back under the plants. So yes, I will actually rely on the heat from a MH to warm the enclosure up to 85-ish in the daytime.
    Oh, and does anyone know how I might be able to contact rlhirst?

  2. #10
    Nepenthes's Avatar
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    Awesome! Thanks for the info. Clint . I think I am going to look into such a bulb.

    thbjr: I currently use T5 HO fluorescents, but I was thinking of using the Metal Halide to cover a larger growing area. Right now the T5's produce a lot of heat already, so maybe I will have to stick with them until I can resolve that issue... Summer will be deadly... so then again, maybe I can just make a grow chamber for lowlanders with the Metal Halide.

    Thx for the input everyone .
    - Daniel

  3. #11
    N=R* fs fp ne fl fi fc L Pyro's Avatar
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    I have a 400W and a 1000W (and yet the police still have not come over...)

    I use the 400W in my crawlspace for the highlanders and cool growing plants. It is on a track and mounted 45cm above things like Drosera and 75cm above the Neps. Works great that way.

    I use the 1000W in the sunroom for whatever I have in there which is currently the tuberous Drosera and a few other odds and ends. It is 1.5m above the plants.

    The 400W does not produce much heat, the 1000W is basically a miniature oven, even at 1.5m I can feel the heat from it.

    For a bulb I am using the AgriSun Gold which is a combo Na/MH so provides both ends of the spectrum.
    'My love was science- specifically biology and, more specifically, when placed in a common jar, which of two organisms would devour the other.'

    See You Space Cowboy

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  4. #12

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    Well I am considering buying a 400 watt mh with a 5 year warranty for under $300 maybe I should try Well there is a possibilty of moving Back to Hawaii again so it may not be needed...... You can get good deals there is a place online where you can bid on police confiscated growlights and stuff. You pick it up somewhere in LA I think......

  5. #13
    Nepenthesian Nepfreak's Avatar
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    Do you notice any difference in the electricity bill at all? 400W is a lot of watts! Also, my parents are concerned that it will be a fire hazard. Is there any real danger in the plants catching on fire or something? Sorry, lots of questions..

  6. #14
    N=R* fs fp ne fl fi fc L Pyro's Avatar
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    Quote Originally Posted by Nepfreak View Post
    Do you notice any difference in the electricity bill at all? 400W is a lot of watts!
    Well my electric is high but in addition to the 400W I have the 1000W plus 2x shoplights, 2x 3 bulb CF light hoods, 4x CF, incandescent, tube combo hoods (each with a 26W CF a 60-100W incandescent and 24" tube), 5' of 5W/foot heat tape, 3' of 20W/foot heat tape, a 2m heat cable and 2 50 aquarium heaters. And then there are all the "regular" electrical things like TV, normal light fixtures, etc... So... I can not give you an exact amount of how much it increased.

    Also, my parents are concerned that it will be a fire hazard. Is there any real danger in the plants catching on fire or something? Sorry, lots of questions..
    If you are allowing flammable material to come into contact with the bulb then there is a potential fire hazard but so long as nothing is touching the bulb/hood then there is no major danger.
    'My love was science- specifically biology and, more specifically, when placed in a common jar, which of two organisms would devour the other.'

    See You Space Cowboy

    actagggcagtgatatcccattggtacatggcaaattagcctcatgat
    Hagerstown, Maryland

    --
    actagggcagtgatatcccattggtacatggcaaattagcctcatgat

  7. #15
    Av8tor1's Avatar
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    I think im doing this correctly.... but based upon a 16/8 photoperiod and $0.12 per Kw Hour

    400w x 16hr = 6.4Kw Hour

    6.4Kw x $0.12 = $0.768 per day

    $0.768 x 30 days = $23.04 per month

    actual cost will be higher due to ballast ineffciencies.. these numbers are for the bulb itself, using the information listed on the ballast data plate will be more accurate

    assuming an 85% efficiency = $27.11 per month

    this will give ya something to show the 'rents, "it's less then a dollar a day mom..."

    Av

  8. #16
    Stay chooned in for more! Clint's Avatar
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    I think our bill increased 20 dollars a month for a 250 watt system. Give or take, could be 18 dollars, could be 22! Magnetic ballast instead of electronic. It's worth ever penny.

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