Hello Everyone. I had my pipes coming in and coming out of pool heater collapsed this weak. I replaced the collapsed pipes the second day. After one day of use, it collapsed again. Every thing was fine pump was working fine, skimmer basket was clean and the most important is my heater was not working in both incidents. Pipes-1 is the first incident. The Pipes-2 photo represents the second incident. Any one has a reason for the cause and how to fix it. I searched over the net. but I couldn't find an answer. I asked technicians, but the don't know or have a straight answer or a guaranteed solution. I appreciate your help.