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Re: Metal Halide Lights

Have a look here: http://www.globaldialog.com/~jrice/oddity_page/break.htm

Too much heat fracturing acrylic tank center braces IS a problem. The
suggestion was to suspend a piece of 1/8" or so acrylic sheet over the tank
top with an air gap between them to shield the tank from some of the IR
from the lighting (read the page).


>I'm toying with the idea of putting metal halides over my 90 gallon 
>tank.  I'd use an enclosed hood but I can't decide how many bulbs to 
>use.  If I center one 175 watt bulb, I'm afraid the tank's center plastic 
>brace will either cause a shadow or melt.  But a 175 on each end seems to 
>be way too much light.  I don't want to use hanging fittings because of the 
>stray light  issue.  Any ideas?

Waveform Technology
UNIX Systems Administrator