actually,i am feeding the minnows. they get sunlight through windows right beside the pond,in the afternoon.when i notice that the minnows have spawned , i plan to seperate the minnows into smaller holding tanks that i have , and remove the spawning structure from my breeder pond . my pump moves 1000 gal per hour . and i put micro lift bacteria in the pond upon setup . im not planning to let the minnows spawn all season like i said im not selling , just fishing . is this better .