I suspect the subject has been brought up before so I will apologize in
advance for replowing old ground but while we are talking about light
sources, what about halogen lights? They can be dimmed, cost very little
and are a very very concentrated source of light. The main down side I
can think of is heat and I have no idea what the lumens/watt numbers are.
At any rate, Ace hardware just had a sale where you could get a 500 watt
unit that looks a little like an oversized auto heatdlight for under ten
bucks. Any comments on halogen lights would be appreciated.
--Earle Hamilton from northern Michigan where coral once grew