How much salt do you add to a 75000 liter pool maintain 3000ppm?

To maintain 3000 ppm of dissolved salt in a 75000 liter pool, you will need to add approximately 225 kg of salt.

Formula:

Amount of salt (kg) = Desired ppm * Pool volume (liters) / 1,000,000

Amount of salt (kg) = 3000 ppm * 75000 liters / 1,000,000

Amount of salt (kg) = 225

Therefore, you need to add approximately 225 kg of salt to your 75000 liter pool to maintain a salt concentration of 3000 ppm.