When you have an employer group health plan and want to apply for Medicare, the work status of the policy holder (you or your spouse) affects whether or not you will be in a Coordination of Benefits period.
Copper is an excellent treatment for saltwater ich or marine velvet disease, but it can be toxic and stressful to fish. Of course, using it is much better than letting a fish die from velvet, but it should never be used in a tank with healthy fish. Improper nutrition is also a commonly overlooked stressor of fish.
How Long can a Fish Live with Ich? I ask because in the past whenever a Fish of Mine got Ich it Died the Very Next Day. Then I read to get a UV Sterilizer and to Kill the Ich when it fell of the Fish. Since getting the UV Sterilizer I have never lost a Fish to Ich.