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RE:Fluorex Lights ( Aquatic Plants Digest V5 #389)
- To: <Aquatic-Plants at actwin_com>
- Subject: RE:Fluorex Lights ( Aquatic Plants Digest V5 #389)
- From: "Gitte" <eladeria at rogers_com>
- Date: Fri, 18 Oct 2002 16:13:05 -0400
- Importance: Normal
- In-reply-to: <200210181924.g9IJOnvY016149 at mailhub_actwin.com>
Thanks for your comments, Wayne. What interests me about this light
fixture is not just the watts per gallon, but its convenience and
compact size. I appreciate that it might not be the "ultimate", and I
don't even know what "overdrive some 2' lamps" means (sorry!). One of
these tanks is in my living room, so the fixture needs to be reasonably
attractive (or hidden).
I think this lamp would be a vast improvement on my 20G and my 10G
'cause the original fluorescent fixtures on these are (single lamp) 15
watts and 10 watts respectively.
> I would stay away from those lights. If you want cheap
> lighting go with a 4 x 32 watt ballast and overdrive some 2'
> lamps. Fluorex does not publish any specs. to support their
> claims and in fact appear to be telling lies about their
> products. The replacement lamp for that fixture is either a
> 27 or 36 watt lamp. Where 8000 lumens comes into it I don't
> know. The only 8000 lumen CF is 3' long, 96 watts and made by
> Panasonic. If you actually do track this fixture down and buy
> it I would bet big money you will be disappointed.
> There is no way to use a nominal lamp wattage to determine
> how much light a fixture will produce. Like many others you
> are being misled by the watts per gallon rule. Just because a
> lamp says it is 65 watts doesn't mean it uses 65 watts and
> just because it says 8000 lumens doesn't mean the lamp
> produces 8000 lumens with that particular ballast. On top of
> that the actual shape of the fixture has a profound effect on
> how much light might make it into your tank. Anyone who wants
> to know how much light their fixture will produce must know
> the ballast factor of the ballast, the fixture efficiency and
> the lamp lumens. If you wish to know how much plant usable
> light will be produced you have to multiply the lamp lumens
> by a correction factor which depends on the actual spectrum
> of the lamp. There is no other way to do this without taking
> some pretty sophisticated light measurements.