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Thread: Enough light ?

  1. #9
    mass's Avatar
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    Quote Originally Posted by kgrudz View Post
    what kind of bulbs produce a lot of lumens. all of the t8's at homedepot that were between 4100k-6500k dont go above 950 lumens. so where can i get a stronger bulb ?
    try Lowe's.. they seem to have more to offer than Home Depot.

  2. #10

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    i have purchased one from lowes as well. anything for 18in is only 15ww. so i dont no how people can get the many lumens for a 10 gal tank by using this size

  3. #11
    Your one and only pest! Ant's Avatar
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    Those sound fine, I would just buy 1 more fixture for them. If you place a reflective surface in the area you are growing them it will help make the area brighter. (If you place aluminum foil on the sides and the bottom, or even use mirrors/buy mylar.) I would see how they do before you decide it isn't good enough. If they aren't working out you could invest in T5 fixtures. They are more efficient then T8 and last longer, though they produce a lot of heat and can be costly to buy in the beginning.

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    so for my 10 gal i have a total of 1580 lumens. everything is growing fine (except my ceph, its healthy just doesnt grow much) and that is enough ?

  5. #13
    Your one and only pest! Ant's Avatar
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    I would try and get that a little higher if you can. Also a nice and long photo period will help in lower light levels.

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    i have about a 16hour photoperiod. im trying to find mylar. who sells it ?

  7. #15
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    The florescent tubes don't usually put out many lumens, by nature. If you want a LOT of lumens, use high intensity discharge lamps (HIDs) like metal halide (the best), mercury vapor, or sodium vapor lamps. The mercury vapor and sodium vapor lamps tend to emit more in one end of the spectrum and little in the other (mercury = too much blue/violet, sodium vapor = too much yellow/red). Metal halide lamps produce an extremely bright blue-white light that is amazing for plant growth. However, these lamps are not for small spaces; they emit as much heat as they do light, and produce way too much light for a ten-gallon. They are also sooooo expensive!!!

    By the way, something to consider is that lux (luminous flux: lumens/meters^2) is just as important as lumens. A smaller space will need less lumens than a larger one.
    "Potential has a shelf life." -Margaret Atwood
    My meager growlist

  8. #16
    Your one and only pest! Ant's Avatar
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    I believe online hydroponics stores will sell it. If you can't find them mirrors look really cool in a terrarium. (they make then look bigger.)

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