I agree get a tripod, shut off the pumps use a remote or the built in timer. Put that thang on maual mode in RAW and start clicking away. I know you will get some sweet shots! Keep up the practice and you will have some sick sick looking shots to go with your sick sick addiction! :P Also try shooting the coral with the daylights on too. You might be pleasantly suprised! Maybe I can come over and I can give you some tips and tricks and we can practice.