Be careful handling sick fish, if they have swollen eyes or dropsy and you lift them out of the water, you can damage them.
Damaged fins and swollen eyes are best treated with big daily water changes & gravel cleaning the substrate, and salt (sodium chloride). The water changes and gravel cleaning improves tank conditions and salt helps heal minor wounds and kills some bacterial and fungal infections.
Wiping the inside of the glass down and cleaning the filter also helps by removing gunk (biofilm on the glass and fish poop in the filter) that encourages harmful microscopic organisms.
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Overall a pretty good video. I hope all those bloated sick fish weren't yours