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reefme
04-25-2012, 10:42 PM
I'm interested in using an LED for my sump so chaeto can grow! but I dont know which LED can I use! Can anyone help me!

JetJumper
04-25-2012, 11:11 PM
I used 2x 10w LED flood lights for my Cheato.. works great.. I harvest half a 5g pail ever so often.

6500-10k spectrum works well. Red will work probably the best as Algae loves the red spectrum, but I have not tried this.

sphelps
04-25-2012, 11:14 PM
The algae only really needs blue and red, ideally more red than blue. So for a DIY project an array of 8 or so 3W LEDs would be plenty, either a 50/50 mix of blue and red or a 60/40 split of red to blue. There are also plenty of plant LED grow bulbs that will also work.

Ryancw
04-25-2012, 11:29 PM
innovative marine makes a cheap one and its got a suction cup for the glass.

http://www.marinedepot.com/Innovative_Marine_Skkye_Light_Utility_LED_Flexible _Mount_LED_Light_Fixtures_for_Aquariums-Innovative_Marine-0I10245-FILTFILDFX-vi.html

you can pick from 6500k (perfect for fuge), 10000k, 14000k and 456nm

JetJumper
04-25-2012, 11:32 PM
Here is a similar model I bought. This one is 3500k but they have 6500, 10k etc..

http://www.ebay.ca/itm/10W-Warm-White-LED-Flood-Light-Garden-Yard-wall-Lamp-Outdoor-Lighting-110V-240V-/120901144669?pt=LH_DefaultDomain_2&hash=item1c2645105d

$20 for a 10watt LED fixture. I am sure you can find it cheaper too if you tried.

reefme
04-26-2012, 12:00 AM
Here is a similar model I bought. This one is 3500k but they have 6500, 10k etc..

http://www.ebay.ca/itm/10W-Warm-White-LED-Flood-Light-Garden-Yard-wall-Lamp-Outdoor-Lighting-110V-240V-/120901144669?pt=LH_DefaultDomain_2&hash=item1c2645105d

$20 for a 10watt LED fixture. I am sure you can find it cheaper too if you tried.

Thanks, I should have two of these laying around. Will give it a try.

warriorcookie
04-26-2012, 12:05 AM
FWIW, on the algae scrubbers the guys are using 660nm reds and getting crazy growth. 6 reds to one blue has yielded some of the best results it seems.