I'm running 2 xr15 pros over a 5ft. tank mixed reef with acros also 2 big maxima clams. I bought a new rs reefer 625xxl about a year ago. I already had the radions from another system. It was only going to be temporary but everything was doing fine and growing well. I don't see a reason to overspend on lighting at this point. I'm running ab+ at 70% with whites turned down a bit.Of course placement is key and proper spacing to get the most out each light. It can be done. I don't need 300 par on my walls and floor..lol. I decided to give it a try because a very popular shop in my area was running the same setup on their frag tanks All 5ft water box frag tanks. I replicated it as best I could and it worked for me.
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