I've had a male betta for six months in a 10-gallon tank, along with three zebra danios and an algae eater. I recently added two platies and two swordtails. The fish store said to add 1 tablespoon of salt for every 5 gallons of aquarium. I added the salt and a week later my betta died. The other fish are healthy. I am wondering if the salt killed the betta. The pet store said the salt wouldn't hurt the other fish. Is this true? Has any one else had a similar experience. I love bettas and would like to get another one, but I don't want one if it can't handle the salt.
Thanks for your advice!
Thanks for your advice!