UPDATE:

If anyone else is running into consistently rising disk I am pretty sure this is my issue (RE logs running with no cap):

https://lemmy.eus/post/172518

Trying out ^ and will update with my findings if it helps.

Gotcha thanks! Thats good to know. Based on the originating ticket: https://github.com/LemmyNet/lemmy/issues/1133

Sounds like it might be safe for me to purge that table a bit more often as well.

Dumb question, how are you profiling (RE your mention of getting a better idea of which tables might be bloated) your DB? Just SSHing into your box and direct connecting to DB? Or are there other recommended workflows?