Quote:
Originally Posted by StirCrazy
Mabe this is what the high end T5 lights like giesmen, proflux ect are doing already to get the edge over the tec lights and such with out telling us. If so you could just upgrade the bulbs and ballast in a tec light and get high quality output.
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UVL worked with Ice Cap on the bulbs. As far as I know they are the only ballasts that do the T5VHO thing.
Quote:
Originally Posted by StirCrazy
also brings the question of active cooling into question, as these bulb and ballast combos were designed to operate in a wide enviorment, from very cold to very hot.. is it realy nessasary with this set up or is it just more stuff to break down causeing more after market sales for the companies.
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I found some actual numbers a while ago that showed LUX output vs bulb temp measured at the cold end but I have lost the link. I had built my retrofit hood with some cooling fans and was taking the temp of the bulbs with an IR thermometer. IIRC without the fans I was was getting a little hot but it was costing me maybe 6% of output or something so I didn't run them often because of the noise. I think it's fair to say that the cooling has an impact but that some people overestimate the impact of it by quite a bit.