Screw in LED bulb for aquarium?
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Old 03-11-2013, 02:00 AM   #1
Soup12
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Screw in LED bulb for aquarium?


I started to see these at my hardware store... bit pricey at $15-45 a bulb, best spectrum i could find was 5k... i heard they have them in 6k kelvin.

Has anyone used these screw in bulbs to grow plants in their aquairums? I am thinking of maybe getting to bulbs to put over my 40 breeder...

thank you
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Old 03-12-2013, 10:15 PM   #2
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They make them but they aren't cheap.
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Old 03-12-2013, 10:43 PM   #3
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has anyone tried them to grow plants? are they worth it (price also) or just better to by a finnex light fixture.
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Old 03-12-2013, 11:16 PM   #4
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Default Re: Screw in LED bulb for aquarium?

I am using 5000K EcoSmart from homedepot and they work fine for me. And much cheaper. The color looks decent too.

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Old 03-13-2013, 04:33 AM   #5
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Will this 65000K led bulb work to grow?

HitLights AffordIX A19 9W Cool White LED Light Bulb E26 Standard Household Base 770 Lumen, Replacement for 60w Incandescent UL Listed - Amazon.com HitLights AffordIX A19 9W Cool White LED Light Bulb E26 Standard Household Base 770 Lumen, Replacement for 60w Incandescent UL Listed - Amazon.com

I plan on hovering 2 of these lights over my 40 breeder. This should be equivalent to 3 watts per gallon = medium light.

Just growing a carpet of dwarf hair grass. The lights will be about 14" away from plants. Should I go higher wattage or lower?


thanks
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Old 03-13-2013, 05:34 AM   #6
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You can't go by the equivalent wattage, you have to go by the actual wattage of the bulb. That would make two of those only 18 watts, not 120. I don't think that would be enough to grow a carpet in a 40B.
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Old 03-13-2013, 08:13 AM   #7
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Quote:
Originally Posted by rocksmom View Post
You can't go by the equivalent wattage, you have to go by the actual wattage of the bulb. That would make two of those only 18 watts, not 120. I don't think that would be enough to grow a carpet in a 40B.
But isn't that the whole point of led... its low watts but has the power of a 60 watt bulb... produces the same amount of light just more efficient.

Am I wrong on this? I don't see why this wouldnt work to grow plants
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Old 03-13-2013, 08:48 AM   #8
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I am using a screw in led bulb on this tank, works good.
http://www.plantedtank.net/forums/sh...d.php?t=266170
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Old 03-13-2013, 08:55 AM   #9
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not working for me :-( too pale
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Old 03-13-2013, 09:04 AM   #10
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Quote:
Originally Posted by sapphoqueen View Post
not working for me :-( too pale
well u want it to be close to the right spectrum - 6500k (white light)

and also strength of led lights matters
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Old 03-13-2013, 09:08 AM   #11
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Quote:
Originally Posted by Jnad View Post
I am using a screw in led bulb on this tank, works good.
http://www.plantedtank.net/forums/sh...d.php?t=266170
so you have 9 watts for 5 gallon tank in led? So I guess i need 120 watts on a 40 breeder to grow dwarf baby tears? (3 watts per gallon)

so even a Ray II 36" DS would not be enough???
36 Inches 7000k/ 7000k 288 3014 29w
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Old 03-13-2013, 09:41 AM   #12
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It is the led components themselves in the bulb i am using that is rated for max 3W eatch. The total power consumption of this bulb is labeled from factory for 5,5-6W total.

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Old 03-13-2013, 06:26 PM   #13
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Quote:
Originally Posted by Soup12 View Post
But isn't that the whole point of led... its low watts but has the power of a 60 watt bulb... produces the same amount of light just more efficient.

Am I wrong on this? I don't see why this wouldnt work to grow plants
It's true leds save energy over fluorescent lighting, but you still can't go by the incandescent equivalency rating. That's why everyone always says to avoid the whole watts/gallon rule when figuring out your lighting. Par value charts can be found all over this board for various fixtures. Hoppy made an extremely helpful thread that has them for popular lighting options and there are some easy to read charts in the Finnex subforum for all of their FugeRay and Ray 2 lights.
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Old 03-13-2013, 09:39 PM   #14
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any good high par LED screw in flood lights that would work then for 40b growing dwarf baby tears on substrate?
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Old 03-15-2013, 01:55 AM   #15
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You'll want to use par38 bulbs like this. Next best thing are the EBay flood LEDs. Probably want the 20watt or higher. And you'd probably want to run three of either light choice to get the coverage over the entire tank.
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