Correct height to hang light?
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Correct height to hang light?

This is a discussion on Correct height to hang light? within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> I currently have a dual T5NO light resting on my 55 gallon 48". While I purchased the light ignoring advice from more experienced individuals, ...

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Correct height to hang light?
Old 07-20-2012, 11:30 AM   #1
 
Absntmind's Avatar
 
Correct height to hang light?

I currently have a dual T5NO light resting on my 55 gallon 48". While I purchased the light ignoring advice from more experienced individuals, I guess some things never change (I've always been stubborn, lol).

So I have decided to go with a dual T8 light which I plan on purchasing from lowes/home depot. Will be browsing this weekend... I am going to purchase some conduit as well to hang the light from, yet have no idea of how high I should suspend the light above the top glass. I don't want it resting on the tank due to getting in the way as well as I don't think I am getting uniform light throughout since it sits closer to the back. Also planning a DIY sliding glass top so...

All the plants I have are low light, and have some wisteria floating on top. Ideas and or suggestions appreciated
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Old 07-20-2012, 12:29 PM   #2
 
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T5NO and T8 are pretty much identical, so not sure why you would change. Unless you can no longer find the T5NO bulbs.

T5HO (for High Output, versus NO for Normal Output) are the ones that would be overkill.

For height, a few inches is fine. The higher you go, the more light is spread out over a larger area, so less intensity in the tank. I have a dual 48" T8 and a dual 24" T8 resting directly over my 125g (6 foot tank).
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Old 07-20-2012, 03:13 PM   #3
 
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Thanks for the response Geomancer. Yeah, the main reason was due to the difference in price as well as availability of the bulbs locally as far as switching from T5 to T8. Since we now have a baby on the way I am trying to wrap up all expenses on extras such as this asap, lol. Especially when I wanted to try out different ones to see the difference, such as run one 6,700k and one 10,000k, I noticed it started adding up. I might just stick with what I have and bite the bullet on bulbs for now, seeing as a couple more sets will probably last me till the end of next year. Not sure...


As for hanging the lights, that is because my tank isn't getting even lighting. I have glass tops with the black hinge strip in the middle. The strip blocks a good portion of the light when placed in the middle so I have the light sitting to the back of the tank. It just doesn't look right as far as the shadows (to me) with the light coming from slightly behind the fish and plants, and I also noticed plants in the front tend to try and lean towards the back. I figured if I put together all glass tops and hung the light in the center it would fix that issue. Just wasn't sure how high I should/could go.
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