Great advise on the autofeeder on once/twice per week setting. I forgot to mention, but I do have a camera set to just the tank. I got the kasa which is similar to the Eufy; is cheap and works with my smart home system. I'll look into a apc, sounds like a good idea although power cuts are very rare where I live.
Am I right to assume that even power goes off and comes back up in a few minutes, the fluval 3 needs to be manually/via app be setup to the programming mode?