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I have this light fixture over my 29gal...

Honestly, as far as light output goes, it's great...

The only problem is light DISTRIBUTION.

My disappointment with this fixture is that due to its narrow width, it only lights half my tank to high levels. So I always have dark spots in the front/back, and because the bulbs aren't as long as the fixture, the sides of the tank as well.

For purposes of display and not having all your background and frontmost foreground plants bending over to reach the stronger light, I would maybe think about getting 2 of these fixtures (they can be joined together) and suspending them higher above the tank. That is, if you insist on this fixture. I don't know of any other options for you. It's a good fixture though otherwise, IMO.

Personally I have this fixture on the front of my tank, and a CF fixture on the back of my tank. This gives me good lighting throughout the whole tank. In the future I hope to get another of these fixtures and suspend them like I mentioned. The other bonus there is if I ever decide to go salt, I have the lighting for the tank, I just need to lower it.
 

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4 bulbs might be a little tricky, but that's why you raise them higher. I would be interested to see if the fixture would work with one of the bulbs removed, that way you wouldn't have to suspend them as high.

Watts don't mean anything except the length of the bulb. Otherwise they are completely irrelevant to light output.

Your call though... The 2 bulbs definitely put out good light. I just couldn't deal with how it looked, personally.
 
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