First time pool owner. My sand filter is blowing sand all over the pool, but I also need to SLAM it. Water is clear, but it’s not holding chlorine. Failed OCLT last night. I’m not sure when I’ll be able to get the filter fixed. I have no idea how to do it myself. Should I not SLAM yet until the filter is fixed? Or can I SLAM right now? I have a SWG that was recently installed. It always says “low salt”. I have a guy from Leslie’s Pool supplies coming next week to look at it.