Join Date: Feb 2013
Location: Southern wisconsin
I'm setting up a 18" Ray 2 (dual 7k) on a 18" Mr. Aqua cube. it fits perfectly and spans the entire tank without hanging over the edges whatsoever. The actual led emitters are about 1" above the rim. Don't have plants yet so I can't comment butter results, but from the research I did prior to choosing this light it sounds like it'll be good for medium light to the low end of high light plants, with co2 being optional.