Master Lim Microbe Enzyme.
Thought I have to share this but as a disclaimer, I am in no way affiliated with the creator nor have I been able to try it on my fish.
There is this Facebook Group called Goldfish University 金鱼大学,.
Been a member of the group for 2 or 3 months now. There's this stuff floating around the group that members claim does wonder to the a couple of issues ailing their fish. It is claimed it has helped with SBD, dropsy and recovery from tank related injuries, t