OK, I left the pump off last night. The psi was back to normal when I turned back on this morning. I had the leaf rake near a skimmer so some kind of flow would help dissolve the salt. I have the pool salt with no additives and it dissolves pretty fast. But I guess it was still dense enough to add pressure somewhere. Now the leaf rake near a return, but away from the skimmer and psi is holding normal after three bags.

So, lesson learned: The leaf rake method works very good, but you still need to keep it some distance away from skimmers.

Thanks for your help and time Poolsean.

Beary