Pond Boss Forums STOCKING A NEW POND Types of fish to choose new 2ac.+ pond

WRT your question about SMB spawning material.

From a study in the Black Bass Symp. by AFS.

SMB nested in water .5 to 3 meters where the substrate contained nest material where at least 40% of the particles were 6.4 to 149 mm in dia. ( .25 to 5.9 inches in dia.).

Here is a typical pic.