Is lossing your tank Coral or fish an inevitability

[Sebae again]

I hope not. We are walking a thin line. We are all short several billion gallons of sea water in our biotopes. Disasters happen in nature never mind our tanks.IMO through my own observations ,I believe that propagated acros become more hardy through the generations of ''fraging'' and being introduced into other peoples tanks eg. different water parameters. At times I feel guilty for being in this hobby but I believe with the changes in the enviroment that one day it may be through us ,in an ironic twist of fate ,that we may be called upon to repropagate the oceans.