Thank you so much for the reply, Will drying it out kill the gnats, eggs and larva or is this not possible? The pot os very old, crumbling and porous. I see gnats crawling into the outside pitted surface also, so that is why I wanted to repot it. think fungus may be in the pot itself. I can water from the bottom and use a pebble tray.
So many questions, so little experience...