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My Tank Thread
Exactly. +1My understanding is that the box says fresh or salt, the bottle freshwater only ... and it wouldn't be the first time (not by a long shot) that an aquatic "medication" was advertised for something it couldn't deliver on. I would rely on copper or Chloroquine Phosphate (CP) to eliminate Cryptocaryon ... and cast a suspicious eye on any other medication. _Especially_ one that claims to cure ich or velvet in a display tank with rock, inverts and corals.
~Bruce