The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.
IMO, put a couple of wafers in at night, and then when the tank accumulates more algae, you can reduce the wafers to one a night or one every other night.
Yeah I'd add a couple of wafers as well. Keep in mind herbivorous plecs don't have a stomach, just a really long intestine. They need LOTS of food to get enough nutrients (and poo accordingly LOL).