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Re: [APD] Lighting question for small tanks

Always the controversial one, Nick ;-)  There is disagreement about how much depth affects the lighting level *in an aquarium*. When filled with water the glass are good reflectors and much of the light that would be dispersed outside an empty aquarium is reflected back into a water-filled aquarium. Put an aquarium in a dark room with no water and turn on the aquarium lights. Then do the same after filling with water (the tank not yourself). Yet plants in my tanks behave a bit as if there is more light nearer the top than nearer the bottom. sh * * * * * * * * * Come to the 2006 Aquatic Gardeners Association Convention and plan a few extra days in San Francisco enjoying the Cable cars, Lombard St., Chinatown, Fisherman's Wharf . . . The Convention will be November 10-12 at the Sheraton Gateway Hotel -- San Francisco International Airport. Speakers, Field Trip, and the largest aquatic plant auction in the US. Details will be posted soon at http://www.aquatic-gardeners.org/ 

----- Original Message ----From: "Wise, Nicholas" <Nicholas_Wise at eon-us.com>To: aquatic plants digest <aquatic-plants at actwin_com>Sent: Tuesday, April 18, 2006 9:50:29 AMSubject: Re: [APD] Lighting question for small tanks

The depth of the tank has a lot to do with it. I'd guess 8 watts might be enough to grow most anything you want.
> -----Original Message-----> From: aquatic-plants-bounces at actwin_com > [mailto:aquatic-plants-bounces at actwin_com] On Behalf Of > Stuart Halliday> Sent: Tuesday, April 18, 2006 9:12 AM> To: aquatic plants digest> Subject: [APD] Lighting question for small tanks> > I've been given a Cayman Aquarium, its pretty small at > 20Litres (5.3 US> Gallons) and it comes with a 8W 12" tube.> > Now at 2.5W per gallon, it seems to me to need around a 13W > tube to allow plants a decent amount of growth surely?> > So why do these people put a pathetic 8W tube in?> > > So I got to thinking about getting more light in it.> I've got a table top adjustable lamp which costed me only Â15 > and it has a 11W tube in it. So me thinks, strip that apart > and put that tube in the lid!> > Suppose to be 6400K.> The lamp looks like two 8" tubes side by side but joined at the top.> See pic.> > No reason I can't use this is there?> > --> Stuart Halliday> 
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