[Hans5849]

i've always theought a good way to measure a major failure in the system would be a water pressure sensor. Set it up so if it drops Xpsi/5mins shutdown, Xpsi/30 mins shutdown, Xpsi 60 mins shutdown, psi Below X Shutdown. X is used as a variable there because im not sure on the exact numbers to be used. the idea is that if the water pressure drops by a certiant ammount in a given time frame there is a leak in the system or the pump has failed, and if the system drops below a certiant pressure it is either low on fluid.