Had some mold due to water leak. Cleaned and patched dry wall but still concerned

Question

Pictures: https://imgur.com/a/2kjInat

There was a small leak from the bathroom above that I noticed only after a couple of weeks. The leak came from the supply line to the toilet, I had tried to attach a T fitting for the bidet and I hadn't tightened it enough. The leak caused the drywall in the ceiling to bulge. I fixed the leak and cut open the drywall. I cleaned as much as I could (cleaning solution shown in photos) and replaced the insulation. I kept it open for a few days to make sure leak is addressed and then I patched up the drywall.

But now, I am starting to doubt if I did enough to kill all the mold. Should I have cut open more of the drywall? Should I have used something stronger? Should I have called an expert? Do the pictures tell if the mold was very bad and are my concerns warranted? Before I sand it down and paint, I wanted to get some opinions. Thanks in advance.

Answer 1

As long as you've fixed the condition that would sustain mold, it's fine. Leaving it open for a few days was wise. The water from anti-mold treatments can remain long after the treatment has long lost its potency. It would have been a mistake to close it if the area was still wet, but I wouldn't reopen it even then unless it was very wet when I mistakenly closed it.

Answer 2

I would simply wait. If water leak is fixed it, the stain on the ceiling will become 'yellow' as it dries. Then you can paint. If it doesn't, then only I would worry and re-open.