ODNO pair of 20W 24" bulbs
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Old 03-10-2004, 02:01 AM   #1
Mustang5L5
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Right now, i only run a single 20w 24" Aqua-Glo bulb. I get pretty decent plant growth although somewhat slow. Most of my plants are low to moderate light. Right now it's only 0.5wpg but i want to try to get that number to about 2-2.5

My tank is 30Lx12Wx24H. It's a little less than 40Gal but not sure what exactly.

I have a small 2' fixture i sort of stole the ballast from. However it uses the bulbs which are about 1.5" in diameter. When i tried to run the two Aqua-glo bulbs which are about 1", it would just light them up very dimly.

I kinda want to run the slimmer bulbs as space is a concern.

So where can i get a few ballast kits that will properly run these slimmer Aqua-glo bulbs?

PS. The DIY C02 is setup, but not running right now seeing as i prob don't need it yet
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Old 03-10-2004, 12:19 PM   #2
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4F32T8 and run it overdriven in to your 2 24" bulbs, wire the bulbs in series..



See more info here:
http://www.plantedtank.net/odno.html
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Old 03-10-2004, 02:33 PM   #3
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I would definitely Overdrive a pair of those bulbs in series, just like Mini4x said. You can get the ballast at Home Depot or a local Lighting Supply store (which will probably carry the much higher quality Fulham ballasts instead of the Advance series).
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Old 03-11-2004, 01:01 AM   #4
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That's perfect! Exactly what I needed.

Thanks
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Old 03-11-2004, 04:58 PM   #5
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I think my ballasts are Sylvanias and I got em at Lowes.
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Old 03-12-2004, 02:31 AM   #6
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Got one tonight.

GT Ballast B432I120RH (4) F32T8 $27.17


It was the only brand they had at Home Depot.

Anyway I got all the parts i'll work on setting it up this weekend. Thanks guys
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Old 03-12-2004, 11:51 AM   #7
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Let us know how you make out, can you taak a before and after picture of yout tank.. I wish I had with mine.
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Old 03-12-2004, 10:17 PM   #8
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My camera's quality is not that great, but i think it can capture a basic idea of the lighting change.

It's going to be my saturday afternoon project, so i'll post results sat night or sunday
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Old 03-13-2004, 08:07 PM   #9
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Well that was easy! Thank you guys.

I retrofitted my stock hood in less than an hour. It was pretty easy to do. I mounted the ballast outside of the hood and just ran the wires in. I bought 4 endcaps to mount the lights from home depot for $3 total, mounted them with bolts and nuts, and just ran the wires along the outside.

The only thing is i don't have a reflector. I'm gonna look for something reflective that i can trim to fit in there and make a sort of reflector. Also, i do have plenty of slots for ventilation up top, but i am going to go buy a sort of PC-type fan that will run on 120 volts. I'll mount it at one end of the fixture and slot some holes in the other and and use that to pass air through.

The light difference is VERY noticable. I went from about 0.54 WPG to about 2.16 WPG. Of course i need to construct a reflector to take advantage of that.

I was getting pretty decent plant growth before with 0.54. But of course it was slow growth, but all my plants were growing. The real test is to see if my plants begin to accelerate their growth.

I can notice a lot more colors on my fish as well as on my plants. The light at the bottom of the tank seems much more vivid and there are more distinct shadows all around.

I did take a before pic. I took it at about 10PM so to compare i will wait til 10PM tonight and take another shot so i can get rid of all ambient light.

Total cost for project

$28 for ballast
$3 for 4 end terminalts to mount bulbs
$14 x 2 for Aqua-glo 24" 18000K 55LUX
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Old 03-13-2004, 11:56 PM   #10
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Here we go. I have pics.

My digital camera is an antique..so bear with this ugly pictures. Same camera settings and exposure time for both pictures. I've reproduced the same conditions as best i can.

Stock hood lighting. 20W 24" Aqua-glo bulb


4-F32T8 ballast driving two 20W 24" Aqua-glo bulbs



The difference is even better in person.
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Old 03-14-2004, 12:49 AM   #11
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that is amazing.
i have been thinking of doing that and now i am convinced. my tank is a tall and i think that it's dark at the bottom.
thanks for the motivation!
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Old 03-17-2004, 12:30 AM   #12
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Ok well it's been a couple days so i can make some more remarks.

The lights do runa little hotter but nothing too bad. I will mount a few PC-style fans in the housing to push some air through.

The plants have responded beautifully. The Large Amazone sword has sent up two brand new large leaves since i increased the light output. They literally grew inches in days. My small red melon sword which is front left center also started sending out a few new leaves. All other plants are responding as well. A peek under my tank shows considerable root growth in the last few days.

Also, my water has been cloudy since setting this tank up 2 months ago. After 1 full day the water was crystal clear. Not sure if that was a coincidence or what. I also started to add a few ferts and will pick up some root tabs for my swords.

I want to try to fill in the sides and back of my tank so it might be time to make a another order for some tall stem plants
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Old 03-17-2004, 03:46 AM   #13
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wow. i keep trying to do this, but can't seem to get the hardware organized. we can find the ballast and the bulbs...but not the housing. :roll:
i think after we move i'll just have to order the things on-line.
can you post more pics? i'd love to see the progress.
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Old 03-17-2004, 01:33 PM   #14
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try useing a lightup Blue LED fan for your hood.. to capture that moonlight effect... i did post about useing these fans when i baught one the other day but someone seemed to have deleted my post
nm

good work mate. i might overdrive my old ballasts
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