I'm hearing alot of conflicting answers on the amount of salt to put into a BW aquarium. Can someone please tell me, how many TEASPOONS (not tablespoons!) per 5 gallons? I've got a green spotted puffer and a peacock goby, as well as 7 silver scats. They've been fine for a long time now on 1 teaspoon per 5 gallons now, but I'm getting confused about all the different answers I see.