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joelespinoza · 07/20/2012, 09:56 AM

Stevesleds Luxeon. $2.99 each and amazing customer service with fast shipping.

The combo of 2:1 Luxeon Royal Blue to Luxeon 2700k warm whites (Or 3:1 if you like the deeper blue look) is the best looking LED combo I have ever seen, and FAR better then any premade fixture I have ever heard of.

The basic rule of thumb was 1 3w LED for 15-20 square inches of surface area up to 24" deep. However, that was for Cree XT-E and XP-G driven at a max of 700mA.

The modified rule of thumb would look like this:

1 XT-E/XP-G Cree driven at 700mA per 15-20 square inches of surface area up to 24" deep

Or

1 XT-E/XP-G Cree driven at 1300mA per 22.5-30 square inches of surface area up to 24" deep

Or

1 Phillips Luxeon driven at 1000mA per 22.5-30 square inches of surface area up to 24" deep

So for a 30 gallon tank 14 Luxeon Royal Blues and 7 Luxeon 2700k Warm whites would be perfect.

Here is a post about me doing 20 LEDs in a perfecto style hood for a 29 gallon tank. its a bit ghetto (the person I built it for was on a VERY limited budget) but might give you some ideas:
http://www.reefcentral.com/forums/sh....php?t=2192354

07/20/2012, 09:56 AM	#9
joelespinoza Moved On Join Date: Dec 2011 Location: Galveston Posts: 417	Stevesleds Luxeon. $2.99 each and amazing customer service with fast shipping. The combo of 2:1 Luxeon Royal Blue to Luxeon 2700k warm whites (Or 3:1 if you like the deeper blue look) is the best looking LED combo I have ever seen, and FAR better then any premade fixture I have ever heard of. The basic rule of thumb was 1 3w LED for 15-20 square inches of surface area up to 24" deep. However, that was for Cree XT-E and XP-G driven at a max of 700mA. The modified rule of thumb would look like this: 1 XT-E/XP-G Cree driven at 700mA per 15-20 square inches of surface area up to 24" deep Or 1 XT-E/XP-G Cree driven at 1300mA per 22.5-30 square inches of surface area up to 24" deep Or 1 Phillips Luxeon driven at 1000mA per 22.5-30 square inches of surface area up to 24" deep So for a 30 gallon tank 14 Luxeon Royal Blues and 7 Luxeon 2700k Warm whites would be perfect. Here is a post about me doing 20 LEDs in a perfecto style hood for a 29 gallon tank. its a bit ghetto (the person I built it for was on a VERY limited budget) but might give you some ideas: http://www.reefcentral.com/forums/sh....php?t=2192354 Last edited by joelespinoza; 07/20/2012 at 10:02 AM.