I'll just paste a few links about smallie beds. I put in 6 total beds in my single acre pond, using cinderblocks, plastic pallets, mesh, limestone and chunks of concrete. I haven't had a lot of recruitment, but the little guys are in there. I wasn't expecting a lot.

https://forums.pondboss.com/ubbthre...mp;Words=beds&Search=true#Post555576

https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=92626#Post92626

https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=133192&page=1