Cheep MH Globe Question

wigman27

New member
Hi guys,
I was reeding a thread a while ago about someone enquiring if the lights on ebay where anygood. The reply was one only has something that was 60 and the better ones are 93, what is this? I know that it has to do with the total of differant coulours in the light and the higer it is the better the colour for coral growth and colouration, Could you please tell me what this number represents.

Thankyou
Lee
 
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