Bill Cody mentioned in another thread that you want to add 1 oz. of salt for every 2-3 gallons of water. So, in 200 gallons, that would be 67 oz. on the low end and 100 oz. on the high end. Pickling/canning salt is fine as long as it's not iodized and there are no additives (pure salt).

https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=455768

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