Common plecos aren't full vegetarians, so don't be afraid to offer him flakes or bottom feeder pellets too. Or even carnivore tabs. Hikari Sinking Wafers or tabs or whatever theyre called meant for loaches and catfish are supposed to be really easily accepted by many fish.I've been removing any uneaten food in the morning. I had some carrots left over so I thought it wouldn't hurt to try. He does poop occasionally so it seems he is eating but it's not nearly enough. I plan on doing a water change today before I add the PraziPro.
I'll see if I can scrap my original plan and try to bump it up to 150 gallon, maybe 200. Will have to check if my floor can hold it first.
Plus he's new so he will still be adjusting.
Can also ask the store what they feed theirs and try to get the same food while he adjusts to his new home.