PSALTXLG Size: 35 lbs Features: -At 0.2% salt level there may be harm to some tender aquatic plants. -0.1% salt solution = 0.83 lbs of salt per 100 gallons of pond water. -0.2% salt solution = 1.67 lbs of salt per 100 gallons of pond water. -0.3% salt solution = 2.5 lbs of salt per 100 gallons of pond water. Product Type: -Pond Water Treatments.