04-13-2013, 07:11 AM
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Originally Posted by Quantum
the CFLs will produce more visible light, they will be brighter
if considering bulbs of both types that use about the same amount of energy (not the 'equivalent to' number for the CFL), most of that energy is converted into nonvisible heat in the incadescent, where a much higher percentage is converted to visible light in the CFL- as much as would be produced from an incandescent using 4x the amount of energy (15 watt CFL equivalent in visible light output to 60 watt incandescent)
if you think it may be too bright, go for the lowest watt CFL you can find, i've seen ones that are 5 watts (30 watt equivalent), but you may be limited in choice of K rating, which is important if live plants are planned
I do have plants so that might be tricky... My thought process is that if 3w per gallon is hight light than a two 13w (60w equivelent) will be 12w per gallon. Figured that high light would stress out my fish and make my low light java fern leaves turn transparent.
Edit: Stumbled upon someone saying that the replacement rating should be disregarded and that it is only melt so the fixure won't melt... My hood takes up to 25w bulbs, but that doesn't make any sense because that would require less than 5w cfl.
I think at this point I will just go with the 6500k 13w cfl I found.
Thanks for all the help guys!
Last edited by fish keeper 2013; 04-13-2013 at 07:21 AM..