What LEDs for my mini AquaClear50 UAS?

[Sailfish]

Hi!

What LEDs should I use for a one-sided 10cm x 7,5cm vertical UAS?
(This was the screen size recommended for 1/2 cube of frozen food/day, when lit on one side, in the updated (2012) algae scrubber screen size FAQ)

I want to try and make a small and slim UAS to put on the back of a AquaClear50 HOB filter.
I have ordered this project box for the UAS trays: http://www.ebay.com/itm/261422984640...%3AMEBIDX%3AIT
Since the 32mm thick box splits into two 16mm deep trays when it is disassembled I hope that it will be perfect for my project. One tray to hold my 10cm x 7,5cm plastic mesh inside the AC50, and one tray as an enclosure for the LEDs.

[SantaMonica]

If your phosphate is lower that 0.2 ppm then I would put two 3-watt red LEDs. If your phosphate is higher I would put three, or maybe four LEDs. You could operate them separately for a low and high power setting.

[Sailfish]

If your phosphate is lower that 0.2 ppm then I would put two 3-watt red LEDs. If your phosphate is higher I would put three, or maybe four LEDs. You could operate them separately for a low and high power setting.

Ok, great
What light spectrum do you mean with "red" LEDs?

Should I have one or two blue LEDs also, or is it not needed?

[SantaMonica]

Blue not needed. Use 660 nanometer "deep red", also known as "plant grow" red.

[Sailfish]

Blue not needed. Use 660 nanometer "deep red", also known as "plant grow" red.

Sounds great, thanks for the help!

I will update the thread with pics when I have made the UAS