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Thread: Lumens and PAR
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post #51 of (permalink) Old 02-28-2003, 04:32 AM
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Join Date: Nov 2002
Location: Joplin, Missouri USA
Posts: 224
Originally posted by GulfCoastAquarian
I haven't ever seen any PUR specs on PC bulbs, other than the Sylvania 55w Dulux bulbs that are only available in Europe.
They're available in the US now.., at least in the 55W version. I just got some (Osram/Sylvania Dulux L 5400K 55W PC's - 2G11 style pins). The same ones that were listed in the table in Ivo Busco's article on Aqua Botanic... Total PUR 36.3 uE/s, PAR 72.2 uE/s.

The Duluxs replaced some 5300K's that I got from AHSupply. They're about $3 a bulb cheaper than the ones from AHSupply. I could tell within 30 minutes of swapping them out that they significantly increased the plants' pearling. Part of that may be that they are new bulbs, of course. The ones I replaced had about 3000 hours on them.

Take care...


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