[reef4gsp]

calcium is 420. I have hermits and a slug that are fine plus a few corals/anemones so I don't think copper is an issue. besides I've never medicated my tank, even when it was fresh.
Turbos, nerites, a few other species. Same symtoms.

Edit: nitrate 5-15 (hits 15 rarely) usually 5-10. phospate is just on the scale. (I beleive that translates to 0.25?) The first one above zero.

I'd like to add that I have one snail that is less than quarter size that happily plugs away eating algae and flips over only every other week or so. He is at least 1 Y.O.