I hear a lot about the 2-3 watt/gallon rule here,
But is that for incandescent only? What about fluorescent?
By this theory, I should be using a 120 watt bulb, but I can't find any....the bulb I have now is only 20 watts (it is a bulb I purchased from Petsmart which says it's spectrum is designed for plants)...In fact, I feel 120 watt bulb may fry my hood fixture.
Please clarify. Thanks.
This information is also in the stickies for future reference.
If you are talking about incandescents, which I don't think you are, then 120 watt bulb in a hood would cause huge problems.
use the site to experiment with different dimensions and you will get an idea of how surface area effects how much light you need.
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