Salt will not evaporate from your pond. After testing your pond water with a hydrometer, you can add salt with your regular water changes. We recommend mixing salt and pond water in a bucket, and then spreading the slurry around the perimeter of your pond. Be careful to avoid direct contact with pond plants.
 

To calculate number of gallons in the pond:

Basic application Rates:

Small Ponds: ½ (120g) per 10 gal. (38L) of pond water.
Large Ponds: 5 cups (1.13 kg) per 100 gal. (378L) of pond water.

For Stress Reduction:
Use ML/THERAPEUTIC SALT FOR QUARANTINE TANKS containing added electrolytes and Allantoin, which accelerates wound and fin healing.

First Aid:

First aid help if necessary will be noted on the label.

Precautionary Statements:

CAUTION
Be especially careful when adding any salt to tanks that contain aquatic plants as salt can have a toxic effect. Before adding salt to your tank, remove any zeolite products. Fish tend to emit excessive amounts of ammonia when salted, so be sure to test your water for ammonia spikes with MICROBE-LIFT®/AMMONIA TEST STRIPS. Do not overdose.