Any thoughts on why I might be getting a low flow alert on my Intellichlor SWG? My flow meter says 50 gpm. I know it’s not the most accurate, but useful for baseline, relative readings. The issue has only cropped up in the past week. Salt levels are fine at 3200 ppm. Here are recent levels. Acid already added to drop pH. My next thought is pull the unions to check for debris, obstructions. Backwashed filter yesterday. Thoughts or similar experiences?