Incandesent vs. Iridescent

PurpleSmurf

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May 4, 2005
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Is there a major difference between these bulb types? I'm either going to buy or build a hood for the 10gal I got yesterday but I'm unsure of what kind of lighting I can use. If I buy a hood I'm limited in wattage because of the plastic (warpage due to heat = :() but if I make one I can do one of two things: create a wooden hood (no warping, slats + fans for cooling) that spans the length of both tanks and holds a light or two with actual wattage or make two seperate hoods.

So I guess the question is this: which bulb type is best for plant growth, minimal heat, and outputs white light?

I'm just curious what I would need for good plant growth in a 10gal I want to plant with java moss, Riccia fluitans, and hornwort (picky plants I know ;)). I know the current lighting isn't working because I had a hornwort fall apart (literally) in my tank today and after that enjoyable clean up job I figure I'd rather have my plants live.

Edit: Since I already have a hood on 10gal #1 would installing these be okay for plants? I'd like to get above 3wpg if possible, but I'm not sure if that would be healthy for the tank.
 
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If you buy a hood with fluorescent bulbs for a 10 gallon it will probably just be a standard 15 watt bulb which will grow plants slowly. If you buy a hood with screw in incandescents then you will be able to replace them with screw in fluorescent bulbs and have anywhere from 2.6 watts and up (13 watt bulbs fit in best but there are smaller versions of 14 and 15 watt screw ins that works). Those are the bulbs that look like a twisted piece of spiraling glass.
 
Okay. I just want to up the watts mostly. I think I have about 20w/1.5wpg and my hornwort con't live in it. =/
 
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