some nice corals you could get based on how long your tank has been would be shrooms, Toadstool Leather Coral, Thin Finger Leather Coral, Cauliflower Colt Coral(just be sure to place with a pretty good curent because some can melt and there goes that look.Open Brain Coral, Candy Cane Coral, Short Tentacle Plate Coral, and Brain Coral, Favites(with these i'm not to sure but some require low light others like bright and some like a low to moderate flow. since you do have net i wolud research a bit and this is a real good site i found a while back http://www.reefcorner.com/reef%20keeping_101.htm
hope this link helps

drew