Medium light ...Strong Light

gregs

Member
When reviewing coral and inverts on this site, the term 'strong light (and flow) and Medium Light is used. I've searched the archives and can find a description of these parameters.
Is there a watt per gallon rule of thumb that defines medium and strong lighting?
I've always considered my light kit (Orbit PC 48in 2x dual daylight (10&15K) 65w and 2 actinic 65w with lunar) sitting 2in above water level on a standard 75g tank to be in the medium catagory.
How much more would put me in the strong catagory?
thanks,
Greg
 
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