2ManyHobbies -
to Reef Sanctuary and the RSM Club forum.
On the bubbles, have you read the thread on microbubbles? There's a link to a diagnostic chart (pdf file) from Red Sea in the first post in that thread:
RSM Microbubbles
There has been an owner or two that has had the problem you've had - with the skimmer all of a sudden going crazy and filling up with water quickly. I'm not sure if the cause was ever identified, but it did stop eventually. As mentioned above, a lot of things can affect the skimmer. Since you saw this start before the medication, is there anything else you may have added? Do you add any dechlorinator to the water? Change salt brands, add any Red Slime remover, any other supplements?
Welcome aboard!