I dont have a pic right now, but I just split the flow off the return pump to go up to a dyi acrylic refugium 14X4X12 that is hung like a picture on the wall behind the tank. A return frim the refugium goes back into the main tank via a hose ending in one of those fan type fittings that came with the tank. It has about 1;5" sand and 4" liverock rubble. I picked up a cheap incandescent canopy and put a 10w 6500 compact flou light. So far it has worked great, growing 3 types of plants and lots of pods.