I have a tanning ledge with a bubbler and I've noticed a salt-like residue that settles on the ledge after several days of not sweeping. It isn't salt, but is grainy like salt/sand and white in color. My calcium content is on the high side and I've had issues with scaling on the tile/grout line, as well as in my salt cell.
Since joining the site and educating myself more, I've learned that a high TA has a tendency to promote scaling. I'm working to lower the TA. I don't think it is calcium residue, just noting that I realize my CH is a little elevated. It appears that the residue is coming from the bubbler, since I don't really see it anywhere else other than the tanning ledge. Has anyone experienced this or know what this may be? Thanks for any help.