Well water may be devoid of dissolved oxygen, and a simple fix is to have the water cascaded or splashed around a bit before entering the pond.

Catfish do get hook shy, so if thinning out their numbers is on your list of goals, keep every one that you catch.

Some of my catfish will eat the Aquamax Largemouth, and that feed does sink if it gets soaked enough. You can pre-soak it before feeding also.

According to a dental hygienist I know, you should soak the Aquamax Largemouth for a few minutes before feeding it just to help the digestion of the same.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."