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post #1 of (permalink) Old 07-20-2011, 01:39 AM Thread Starter
Planted Tank Enthusiast
h2oaggie's Avatar
Join Date: Feb 2011
Location: Cypress, TX
Posts: 688
29 gallon LED build

I want to upgrade the lighting on my 29 gallon from a 2x24W T5HO fixture. I mainly dislike having dark ends of the tank where the 24" fixture is shorter than my 30" tank.

I have taken my inspiration from one of Hoppy's builds. I plan on using 2 2" wide aluminum channeling to house 7 cool white CREE XP-G's, for a total of 14 LED's. I had intitally planned on using 65 degree optics, but I only want to suspend the fixture 6-12" above the water surface. In talking with Rockhoe14er, I have come to realize the optics might be unnecessary. LED's will be spaced 4" apart, and the two rows will also be 4" apart. This will allow for the most even lighting on the 30"X12" tank without using 20+ LED's. I will be using a dimmable Mean Well driver to achieve the PAR I desire (80-100 at the substrate).

Is there anything I am missing? Any suggestions?

I am a total newbie when it comes to electronics, so thanks to speedoflife (local TPT member) and Rockhoe14er for your help so far.

My RapidLED cart looks like this.

CREE XP-G R5 Cool White 3W LED on Star $5.00 14 $70.00

10K Ohm Linear Potentiometer $3.50

10V AC Adapter $10.00

Mean Well ELN-60-48D dimmable driver $34.00

3-Prong Power Cord $2.50

Sub-Total $120.00

Here is a very crude mockup of my planned fixture.

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