i ordered actinic light from this place and they shiped me 20000k 450nm lights, how much diference is there and are these good light or should i send them back, they are 65w PC lights btw
I would call the company you ordered them from to find out what the differnce is and try them out to see if you like the color. It may be close enough to not worry about.
I'd send it back for a "true" actinic. It appears you got a blue light versus actinic, which is 420nm. It's around this spectrum where your corals really fluorscence.
