I think my drivers failed.
Tested the led chip with a 32v dc output power supply and it works still.
I sent an email to the seller and he said that the blue wire is the hot lead ( not the brown wire).
So he is sending me new drivers.
Ibrahim said:A par38 bulb has much more par than the LEDs on eBay. That's how it can grow SPS.
The price difference between 50 watts and 30 watts is very close. So if I purchased 5 x 50 watts and put them on a dimmer would that be okay. I am shooting for middle to high light on my tank.I would think you would need at least 4 30's
Yeah we're all waiting for that, just to see how good they really are. I don't really care for sps's so I don't have any but someone out there should put a frag or two under them so we can see if they can grow them.