I haven't seen this solution posted yet, so I will do the honors. I have many plecos: L104s, L240s, L240s, L400s, L046, L260s, ottos, and farlos. Their dietary needs are somewhat different, obviously. If you are looking for a way to get your fresh (or frozen or blanched) veggies and fruits to sink, try sticking a fork in them and resting them on the bottom of your tank. I do this with zucchini, and the plecos always know where to find it. And shelled peas are good for all fishes digestive systems. I put a handful of frozen peas (I use petite size) in a cup of water and microwave them for 1 minute. Then drain the water and shell the peas. Some of the peas I will mash up for the other fish, but for the plecos I drop them whole into the tank. Good luck.