New house ,new pool. Removed mesh safety cover to see dark green pool. More concerned with the sagging liner and if I can fix or just replace. Checking rest of equipment. Was closed by a local company but don't believe any chemicals added. Set filter to waste, primed pump and removed water level from over skimmer 1in to half way. Can't see bottom,don't believe there is a main drain from dragging net on bottom. Waste went fine. Tried recirculation , water came out of heater, tightened unions, still seems like lots of pressure builds in it and also drips out. Water also shot out of unhooked up slide water supply.Getting heat exchanger fixed is not a problem with awesome local rad shop. My first question is about the valving and how it works, I thought I had it figured out a bit but, I also love craft beer.. Do I maybe have the valve moved wrong and actually just blew up the heater or are the returns blocked. As a newb , how does the site prefer photos, attached to page or through another host site and which. Been a bit since I've used a forum. Thanks in advance.