We just bought this house and have had it a week. I have been doing a SLAM to get the water healthy. The previous owner was a pool store guy and the pool had 2ppm of CC when I moved in. I noticed today that there is a crackling noise coming from the valve area. Sometimes it goes away and then comes back again. Like there is a rock or something floating around in there. I've seen where it could be air bubbles but I don't think I have a leak because I don't get air coming out of my return valves. I took a video, so please feel free to chime in if you have any ideas. Also, there are some bubbles in my pump but I though a few bubbles was normal. I could be wrong about that.
Thanks.
YouTube
Thanks.
YouTube