I have had this head of coral for 8 or 9 years. I just broke off another head it use to have a more than a dozen heads and is now down to 6 heads and a lot of single heads. I just touch it and it breaks off is there something to add to the water to make them more structural sound or is this the way the species multiplies? My water prams are: Salinity 1.026; Calcium 420+; ammonia 0; nitrates 0; PH 8.2 to 8.3; AKD 9 to 10; Temp. 78.