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Old 12-02-2012, 03:57 AM   #46
Sethjohnson30
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I I could probably fab something up out I aluminum then polish it but I'm not sure I need more light I kind of like it the way it is

The bottom tanks will be high light tanks I may use 20w led flood lights on those and just use screen to filter it. Or I may just blast them with light co2 and ferts. They will be fishless. So I can push the limits and see how fast I can get plants to grow
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Old 12-02-2012, 03:45 PM   #47
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Interesting how it doesn't appear as bright as CFL, but then it has more lux. I don't have a lux meter, but I do have a solar fan I made by cutting up a solar powered fan hat, and it will not turn on when you put it up to a CFL bulb, but if you put it under my LED floodlight, it goes, under my metal halide, it goes. Lets face it, fluorescent is great technology when you want to throw light all over to illuminate a room, but when you want a substitute for sunshine, not just from a grow some plants stand point, but from an aesthetics standpoint as well-it falls short.
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Old 12-02-2012, 05:16 PM   #48
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That's good to know I have a couple of those fans. I wanted to use them under my t5ho but even with all 4 on they don't work. I will have to try one out under my led
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Old 12-03-2012, 12:06 AM   #49
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On my riparium I have 2 t5ho bulbs in a Hagen glo fixture it is elevated about 20" off the surface I'm thinking I may try to replace it with a 20w LFL (led floodlight) any input?
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Old 12-03-2012, 12:59 AM   #50
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The light is much brighter than that in person
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Old 12-03-2012, 01:58 AM   #51
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IME, skip the 10W and go 20. 40 is much better.

10w is low to medium light. i wouldnt have believed it unless i saw it just now. will have to post photos but my phone is now dead.
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Old 12-03-2012, 02:23 AM   #52
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IME, skip the 10W and go 20. 40 is much better.

10w is low to medium light. i wouldnt have believed it unless i saw it just now. will have to post photos but my phone is now dead.
I should go 20w for the high light 10g? Or are you talking about the riparium(wich I plan on going 20w)
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Old 12-03-2012, 09:56 AM   #53
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I tested a 10w led flood lamp on a 5.5g and it was somewhat disappointing. The lighting was nearly thoughs lightly less than what I am seeing using a 26w 6500k cfl using a clamp light fixture. Again, I'll have to post photos this morning.

Both pics also include the glass top for which the lamps were placed and floaters on the surface of the tank. I have a pair of 20w led floods which I planned on using on my 55 g but may go to the 40 w now ....
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Old 12-03-2012, 10:08 AM   #54
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How are you measuring the light?
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Old 12-03-2012, 12:22 PM   #55
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Quote:
Originally Posted by acitydweller View Post
I tested a 10w led flood lamp on a 5.5g and it was somewhat disappointing. The lighting was nearly thoughs lightly less than what I am seeing using a 26w 6500k cfl using a clamp light fixture. Again, I'll have to post photos this morning.

Both pics also include the glass top for which the lamps were placed and floaters on the surface of the tank. I have a pair of 20w led floods which I planned on using on my 55 g but may go to the 40 w now ....
I bet if it has a lens to narrow the beam it would be more functional, of course that just adds to the cost.

that sounds disappointing.

Is the light spread too wide?
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Old 12-03-2012, 05:49 PM   #56
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I'd go for the highest wattage your budget allows, although you would probably get the most watts per dollar through multiple or bulk 10W fixtures. You can always deploy some floaters or raise it up if it's too much light. Look forward to seeing the pics acitydweller.

I've got a 10W round model on the way (6500k)-looks pretty snazzy. One ebay listing said it is submersible-not that I'm going to do that. I'm going to put it over my emersed grow bed on my 20L.

This is the one, allegedly yields 900 lumens (I didn't go for the RGB with remote that costs 10 bucks more):
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Old 12-03-2012, 07:06 PM   #57
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My square 10w puts out 1300 lumens but I have no idea how to convert that to par or how many lumens high,medium,and low light is for led
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Old 12-03-2012, 08:37 PM   #58
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For comparison
versus

The light intensity certainly is greater on the Flood but the difference becomes more evident once you raise the fixture 1 and 2 inches.

The CFL lamp actually improved the spread without loss to the intensity of the light downward whereas the LED flood dramatically became dimmer directly below the lamp itself when raised.

IN fairness, 30% of the water surface is covered by floaters so this isnt a true representation of the lamp but its what i could muster last night near midnight with my camera phone.
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Old 12-03-2012, 09:12 PM   #59
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Quote:
Originally Posted by acitydweller View Post
For comparison
versus

The light intensity certainly is greater on the Flood but the difference becomes more evident once you raise the fixture 1 and 2 inches.

The CFL lamp actually improved the spread without loss to the intensity of the light downward whereas the LED flood dramatically became dimmer directly below the lamp itself when raised.

IN fairness, 30% of the water surface is covered by floaters so this isnt a true representation of the lamp but its what i could muster last night near midnight with my camera phone.
Your bulb seems a lot less bright than others, specifically HEINEKIN357's
http://www.plantedtank.net/forums/sh...7&postcount=22

can you (and HEINEKIN357) please post the ebay id from which you bought it? I'm really interested in these for my med-high light 40gB but I'm afraid to make a bad purchase
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Old 12-03-2012, 09:19 PM   #60
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That looks pretty intense, it goes allt he way to the bottom.

It looks like the angle is the issue.
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