Originally Posted by AquaRick
1 watt LEDs aren't going to cut it for a reef.....regardless of how many you have. Check out the taotronics LEDs if your looking for a good deal. There's a long thread about those fixtures here on AA.
I tested PAR on a 120 watt Chinese fixture using 120 1watt emitters and another panel with 60 2watt emitters. I got the same PAR readings at 12". Number of emitters doesn't matter as much as the make of them. Some, like Cree are more efficient, so my Cree equipt 90 watt fixture puts out as much if not a bit more PAR than my 120 watt Chinese fixtures that uses Bridgelux parts.
I'm just saying I grew a lot of coral under the old 1watt per led