Thanks!
The mag deflated twice on the first couple of days of treatment and since then, it's been fine. It's been a week since I began the treatment and tomorrow I will be transferring it to the main tank again.
Today I made a complete rescape of the tank layout and I am waiting for everything to settle down.
I have one question. The mag is now attached to the top of a glass jar. Should I attempt to remove it from the jar or is it better to put the jar right next to the rock I prepared for the mag and hope it moves on its own?