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Thread: Tall plants

  1. #9

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    Just remember, I saw a 175watt halide security light at homedepot for $83.

    joe
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  2. #10
    Tony Paroubek's Avatar
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    Distance will depend on the power of the system. A higher wattage bulb will need to be further away but at the same time it will light a larger surface area.

    Another place to look would be Aquariaum sources for used equipment or perhaps Ebay for a used fixture. What is important is the wattage and a good reflector. You will want to get a new bulb for it anyway. It would be a good idea to research bulbs and find the one you would like to use and then get a fixture that will use it. Both the metal halide and the HPS bulb types come in horizontal and pendant and a variety of bulb bases. So it is important that the fixture and the bulb are compatible.
    Tony
    Is that a Nepenthes in your pocket or you just happy to see me?

  3. #11
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    Man, I about got a headache last night looking at different types of lights. Very confusing. I've found lights for 400 and 1000 lumens, both high pressure sodium and metal halide. I'm guessing that's way to much on the electric bill, and they put out over a hundred lumens [img]http://www.**********.com/iB_html/non-cgi/emoticons/wow.gif[/img]. I'll keep searching, but keep the advice coming [img]http://www.**********.com/iB_html/non-cgi/emoticons/smile.gif[/img] . Thanks.

  4. #12
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    Ok, I've narrowed it down to two choices. One is here;

    http://www.hydroponics.net/_scripts/...s.asp?i=388525
    This one is a metal halide lamp for 1000 watts. Costs $200. It would probably cost me a dollar a day, so I may just get the 400 watt one for $150. At that wattage, I could place it about 4 feet above the pots right? My other choice would be;

    http://www.igcusa.com/sunlight_suppl...house_grow.htm

    The Sun System VII Super Spectral System with dual 400 watt metal halide, and 400 watt hps bulbs for $390. Witch one is better considering price, electrical bills, and efficiancy for plant growth? Later.

  5. #13

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    Nathaniel, I'm seriously looking into option #1 for myself in the 400 watt version. Cheap, adjustable, descent reflector, medium power, good starter set in my opinion.

    joe
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  6. #14
    Tony Paroubek's Avatar
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    Something else to think about..

    The more bulbs you have the more bulbs that need replacing. It is not a whole lot more to replace a single large bulb vs a smaller bulb. It gets very expensive to replace multiple bulbs though. There is some argument that a combination of one HPS and one metal halide gives a better balance of light. This is true, however a high quality bulb in either type will work very well without the other.

    Personally I would go with at least a single 400watt to start with.
    Tony
    Is that a Nepenthes in your pocket or you just happy to see me?

  7. #15

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    Tony is right,....

    BUT...

    If you have only artificial light reaching your plants and you have only one bulb then the shadows (for excample a smaller plant overgrown by a larger one) will be almost 100% shadows (=no light for the small plant)

    If you have two different bulbs at different angles then most of the shadows will only be 50% shadows.

    The light also doesn't vary as much from center to corner as it is with one light bulb.

    If one light is damaged and you aren't able to replace it for some time than your plants have to survive complete darkness when there is no remaining functional bulb left. Otherwiese you have still 50% of the light (if you use 2 bulbs)

    -

    A drawback of more bulbs other than the higher costs is that bulbs with lower wattage are often less effective (lumens/W) than the powerfull ones.
    This may be compensated by the better light distribution of two or more bulbs.

    Martin

  8. #16
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    Haunustly, I think a 1000 watt light for $200 would be best. It will give me the needed ground area for my really big plants(like N. rafflesiana giant) and the needed hight for my nepenthes. Though it may cost a lot (electrical bills) it should give me great results. I know the person who made the Plants With Attitude webpage uses the same wattage metal halide lamp. Says it works great for him (but costs him like a dollar a day).

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