FREE WATTAGE - Free Downloads

A useful hydroponics calculator to help your hydroponic grow. Includes calculators for grow light wattage, grow light energy costs, EC or PPM conductivity, temperature conversion, air exchange, and a carbon dioxide calculator.Watt-U-Use calculates the cost of running any household appliance (lights,tv etc) using any two of these values: amps,voltage,wattage. Shows you the least and most expensive household appliances to run.