Lighting for a 135 gallon tank - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 12 Old 04-01-2011, 02:19 PM Thread Starter
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Yes I already have glass tops. These lights on the cord have a heavy metal box. why?
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post #12 of 12 Old 04-01-2011, 03:41 PM
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Originally Posted by johnnyjiron View Post
Yes I already have glass tops. These lights on the cord have a heavy metal box. why?
I'm not sure what you are referring to, but it could be the ballast. Fluorescent tubes require a ballast, usually built in at one end of the fixture.

The glass cover presumably sits down on the inside of the lip around the frame. And the light fixture sits up on the tank frame. So you could get a second fixture later if needed.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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