I use it with all my water changes. It is part of what I treat the aging bin with. Doc Wellfish's aquarium salt says 1 rounded tablespoon per 5 gal. I use about a flat table spoon per 5 gal. Salt will harm certain fish, but doesn't harm bettas. Most of my tanks get 100% water changes, but any tank I only do partial changes on, gets water with no salt added every few weeks. Evaporation leaves a heavier salt content in your water. Occasionally using water with no salt will keep the balance. Salt reduces stress, and adds electrolytes to the water. It also promotes healthy gill development. When you hear of a salt bath for a sick betta..the salt content is much higher than for normal use.
That is why the bath only lasts 15 min.or so. Using salt regular is not like medicating when the betta is not sick. The proper salt dosage used for sick bettas will still work.
Go do some research, other than a board that has many opinions. Look for breeders that have been in the business for years, and have a web site. Check the medication companies, and see what their research has come up with. Some of you go to the shows. Look up Dr Gene Lucas. He is still around. Jim sonnier is still showing some, and has a web site. He has one of the best sites around on giving information. Ralph tran is a genius on Betta genetics. He let his site go down, but put many articles in the IBC newspaper for quite some time. Ask around, and you can probably locate some of them.
Dr. Gene Lucas has several articles published. You can get a CD of these from the IBC if you are a member.
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