i rubber band it to a rock and let it sink.. plecos need a varied diet, just like your fish (not just algae wafers). my pleco loves cauliflower, brocolli stems (not the heads-they are too messy) zucchini, yellow squash, cucumber.. and i have heard they lOOOVE pumpkin.. im going to try that. ive also heard they love cantalope and honeydew-but havent tried those yet either...