I'm starting a coral farm with a 135g, 65g, 55g, a 40g long, two 40gs, and a bunch of 20gs and smaller. I'm thinking of doing a couple of tanks together with sumps and remote deep sand beds, but i dont know what to do with the 135g. Should i do a sump and remote sand bed or just put a sand bed in the tank and suspend the coral on shelves above the substrate. Any one think built in tank refugiums are worth the hassle? Also any ideas on cheap good quality lighting?