In article .com,
John W wrote:
There are some options available to you. Some people like electronic
ballasts (the thing that runs your flourescent tubes) better, for
reasons such as extended bulb life and better light output.
Additionally, high output 32W T8 bulbs would use less electricity,
although home depot didn't have aquarium or sunlight bulbs of this
type.

I found Philips daylight TY8's in 4' for $2 ea n Home Depot here. Intensity
matters way more than spectrum; but you do want more red than blue
as alage favouirs blue and plants favour red. Lok up at the sun,
does it look blue to you at all times of the day? It's been shown
alage will scavange unused elements of the spectra.

Keep in mind that you should change your bulbs about once a year (or
one every 6 months, if you have two), so the cost of bulbs is

Or just add another tube. Three 10 year old dim bulbs are brighter than
2 new ones.

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