How much dry ice would it take to cool 30000 gallons of water by 5-8 degrees?
To cool 30000 gallons of water by 5-8 degrees, you would need approximately 215-320 pounds of dry ice. Each pound of dry ice can cool about 10 gallons of water by 1 degree. So, for a 5-8 degree temperature drop in 30000 gallons of water, you would need to use 215-320 pounds of dry ice.