Utah Division of Wildlife Resources (UDWR) has sought to improve triploid induction and hatch rates of Walleye Sander vitreus. To induce triploidy, fertilized Walleye eggs are first subjected to an anti-adhesion treatment before receiving a pressure shock. Historically there has been a desire to treat as many eggs as possible at a time to maximize output. However, this can result in poor induction rates and low egg survival. Over several spawning seasons, UDWR experimented with multiple egg adhesion and pressure treatments and found that smaller lot sizes greatly increased both triploid induction as well as hatch rate of pressure treated eggs.