I was wondering if lighting from my skylight would be enough? I mean its only bright from dawn to dusk (which is relatively short during the winter months)... or must I use CF lighting? It seems such a waste to replace CF every months as the FAQS indicate and I rather not pollute with all that mercury in CF lights... is there no other alternative... they did mention the use of LED lights, has anyone have great success with that or any other type of lighting? Preferably one that doesn't need to be replaced? Thanks...