75g display, 20g sump, separate 15g refugium.. with 2 x 250w HQI 14K Hamiltons supplemented with 2 x 110w VHO super actinics, Euroreef CS180 protein skimmer, CA1800 return pump (cheap, i know but it does its job very well for several months now with no problem), 3 MJ1200's, approx. 130 - 150lbs of LR, and as of august - no fish due to an ich outbreak.. I removed them all and took up to a LFS for a good copper treatment and will be letting them sell the fish when treatment is over.. I am picking up a mystery wrasse tomorrow after work for $110!! I am excited about that (both the fish and the price)!! All levels are 0 and I have been running UV for 3 weeks now 24/7 with no problems whatsoever to be sure the ich is gone! All water flows thru the overflow, down the tubes, into the sump where the heater, skimmer, phosphate reactor, and UV is, then flows thru a bulkhead into the refugium where 100% of that water flow is filtered by chaeto and caulerpa and pumped back into the display.. Unfortunately I dont have the room in my stand for the sump and fuge so it sits on the floor next to the tank.. Gives it the scientific look IMO.. LOL