So I have had the same 4 head trumpet coral for 8 months. They have nto grown at all. One head has gotten a little larger but they will not multiple? Why? All params are good and I spot feed them and the rest of my LPS 2-3 time a week. I have brought a 3 head acan frag that was eaten to the skelton to a 20 head piece in 5 months to show my care for the tank.