What happens next?

How to feed a pleco
Keep driftwood in the tank at all times.
Your pleco needs lots of fiber in their diet, and they can get it from driftwood. Make sure to provide several pieces of driftwood in the aquarium at all times so your pleco can suck and scrape it off.
The tiny pieces of driftwood the pleco eats help with its digestion. Rather than collecting driftwood yourself, choose real driftwood sold at fish or aquarium stores to ensure it is safe for your pleco.