Keep in mind that PAR drop reported by ihavecrabs is with a fixture that isn't actively cooled. Of course you're going to burn the schnikeys out of the lamps without active cooling (in addition to getting lower PAR values). You're better off going with a higher quality fixture than a TEK because in the long run your lamp replacement costs will outweigh the up-front difference in the cost of the fixture. Comparing a TEK fixture to something like an ATI, Sfilligoi, Fauna Marin, etc. is like comparing a Seaclone to BK. I'm sure there is obviously some PAR drop in the better fixtures but I doubt it's as rapid as the uncooled TEK and comparable fixtures. This is one of those cases (similar to skimmers) where you really get what you pay for.
I'm going to have to get a PAR meter so I can monitor the PAR changes in an actively cooled fixture.
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Originally Posted by digital-audiophile
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