I placed pea sized crushed limestone about 4/6 inches thick, 2to4 feet deep along shoreline for 200 feet...the beach has 3/4 limestone crushed covered by cement sand 4 inches thick out to 4 feet deep up beach about 20 feet by 30 feet wide...spawning seems OK; also have pallets four deep weighted down every 20 feet or so for the fry and shiners; shiners breed well with the pallets...the limestone helps maintain neutral PH.
