misterj0shua

Hello, I am new to the forums so I apologize if this question is in the wrong forum. I went out to the pool and discovered that my drain cap had cracked and was leaking water. The drain cap is about a year old. First Question: What would cause something like this? Any ideas? Second Question My normal Operating pressure is 15 when I am not running the water to anything in my system. However, when I divert water to either my heat pump or solar heater the PSI kicks to 20. IS this normal or something I should be worried about. I have a hayward S-210T filter and don't know the pump specs, Ill have to check when I get home. But I figured I would post the question and see what I would get. Ill update full specs when I get home. 16x32 size with approximately 20,000 gallons. Thanks.