Thanks for the info. I do have that book and have dug many ponds but the ones I have had in the past were over 3 to 5 acres. I have unlimited water supply from and undergrond spring and I can run a overflow 5" duct to a lower section of land that ins't on my property but the land owner says it's oK with him. I just didn't know if a small 1/8 pond would be large enough to hold SMB and some perch. On my other ponds I never had to feed the fish as they had unlimited minnows to live on and other insects that I would catch in a minnow trap and set them free in the ponds. I figure if I can get enough small perch to feed the SMB I should be OK>