My pond is about an acre with lots of cover and depth changes but no barrels or tires for catfish spawning. I’ve not only had recruitment but actually had albino channels achieve recruitment! I know that sounds crazy bc my pond has LMB, HSB, RES, BG, Perch, CC, and Crappie! I haven’t stocked albinos for 3 years and this spring i caught a 5-6 inch albino by the feeding station with an enormous belly I assume from the fish food. Every pond is different and the more I learn the more I realize any rule of thumb can and eventually will be just that, a rule of thumb not law! Where there is a will there is a way! And with Nature there is always a will!