this is correct. ive always had a water softener, i also have tons of plants in my tanks. dont listen to old wives tales. the salt is only trace amounts, and it doesnt build up if you do water changes. now if you just add water to a tank, everything builds up, but if you do water changes the trace amount of salts in the water get removed with the change, but of course you put in more trace amounts of salt with the new water. ill double down on the salt nonsense, and tell you i add salt to my planted aquariums. not a ton, but more than any water softener is putting in the water.