I have had my 75 gallon (standard size) FOWLR tank for about a year. My filtration is an aqua c remora pro skimmer, two hang on marineland power hangons, and an eheim canister classic. There is 75 lbs of LR and a 4 inch deep sand bed. The tank is stocked pretty heavily, but i am not concerned because all are small and i plan on selling fish that outgrow the tank. I currently have one 4" Foxface, 5" Hippo, 5" Yellow tang, 4" Huma Trigger, 3" Klein Butterfly, 3" Diamond Goby, 4" Maroon Clown, and a 1.5" Blue Damsel. I do 10% water changes every week, and i have never had a problem with water quality. I would like to turn the tank into a reef. My question is what to put into it. My light is a 4 x 64 watt, two actinic two 50/50 power compact light with moon lights. I would like to put in mushrooms and soft corals because the lighting is not so strong. I was thinking a bubble coral, ricordea mushroom, toadstool and button polyps. Does this sound do-able? I was also thinking about putting a Quadricolor for my maroon clown, but i would isolate it on a LR island on the side of the tank. Any suggestions or problems?