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in my 30 gallon tank i have 2 incadesent fixtures so i decided to use the screw in flouresent bubls, they only consume around 25 watts of electricity but they output 100 watts of light each, is this sufficent to grow plants?
He's referring to the screw-in compact flourescent lights that are made for lamps, etc. From what I understand these are not very suitable at all for a planted tank...light largely isn't directed downwards into the water, since they're meant for projecting light in all directions. They're also sort of small so I can't imagine that they would do a good job of evenly distributing light in the tank. They aren't incandescent, but they're not good for an aquarium either.Erirku said:HUH?
So, you say they use only 25w an hour or whatever the deal is, and the output of lighting is 100W X 2= 200WPG that means you have 6.67WPG, way too much light, and alot of new unwanted growth (algae).
Incadescents aren't that great either, they have a tendency to make the water warm or hot and aren't that great for plants for photosynthesis. If I were you I would get rid of that and go buy a compact fluorescent fixture for aquascaping. If you can't afford one, then I would go with www.ahsupply.com for money savings. Hopes this helps?