Thinking about addind second LED

[hodge918]

I recently upgraded from a 16g to a 30g cube and I am using Marineland Reef Compatible LED which worked well on my 16g and seems to be doing ok on the 30g. I have a second Reef LED that I was thinking of adding and running for a few hours a day but I am worried about running too much light. How can I determine if this is an over kill?

 

[MrIcky]

Without a par meter, you have to rely on careful observation of your corals. It is unlikely that a 2nd unit will be overkill.

 

[hodge918]

ok thanks