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!