Hello, I am having an AGP installed in 2 weeks and will be running electrical and adding hard-plumbing for the connections to pump/filter, swg. Pool is 18' round saltwater compatible. I will run a circupool RJ30 SWG. We live in north NJ and I hope to get some swimming in late may and late september. Should I install a heat pump like the Raypak 62 btu one or will a Dome Pool solar heater suffice (will use solar blaket with both)? I am concerned about cost and corrosion from salt, but need to make decision now since the heat pump can use the same electrical trench. Also do I need to ask installer to add sacrificial anode inside the plumbing or is this done by electrician?