I've been reading up on methods to remove external parasites on new arrivals and the simplest one I've found so far appears to be the salt bath. I read something about using high salt to water ratios. What should the salt to water ratio be? Should it be 1 tbsp per gallon of water? Also, will this affect the pH of the water? I just made mixtures of table salt, sea salt, and aquarium salt and checked the pH with tap water. I didn't see much change except for the aquarium salt batch. The aquarium salt batch seemed to go up approx. 0.2-0.3 compared to plain tap water. Is this true or are my eyes playing tricks on me?