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[APD] Spiral and multiple-tube small fluorescents.
I have used many kinds of small fluorescent tubes over aquaria, and the
ones I will never buy again have either a spiral tube or two or three
"U"-tubes mounted side by side (or in a triangle).
The spiral tubes don't last more than a month or two in a hood, turning
quite black and dim. They often produce huge electrical noise that jams
radios and any X-10-Type controllers you are using.
Those and the multi-u-tubes are shining most of their light back on
themselves, so are much less efficient than a single straight tube or
even a single "U" tube. It is nearly impossible to improve their output
much with any kind of reflector, as that just increases the "restrike"
energy. Single "U" tube and straight-tube lamps have a little restrike,
but the reflector efficiency can be many times higher that with those
systems scrunched to fit in the space of a normal incandescent bulb.
Final word: Don't buy spiral tube fluorescents for lighting a tank. It's
a waste of good money. Get Brite Kits from AH Supply.
Wright Huntley -- 760 872-3995 -- Rt. 001 Box K36, Bishop CA 93514
Mencken's maxim—every election is a sort
of advanced auction of stolen goods.
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