i was at my uncles hous the other day and i was helping him do water changes to his tanks and hes old school with his fish keeping for over
25- 30years but anyway i was draining the water in the tanks and relized that we had no prime is what i use but dechlorinator and i asked him what are you gonna you to to treat ur water when we fill the tanks back up???? he looked at me a laughed and said you dont need that stuff he told me as long as you leave 25% of the old water in the tank you will be fine and i said are you sure he said watch and i sat back and watched him and thats what he did filled the tank right up with water right from the garden hose and the fish were fine and then i said well what about the ben bac and he said watch this he whiped out some colonized bac and put some in the tank and said thats all u need and his fish were fine and have been for years
25- 30years but anyway i was draining the water in the tanks and relized that we had no prime is what i use but dechlorinator and i asked him what are you gonna you to to treat ur water when we fill the tanks back up???? he looked at me a laughed and said you dont need that stuff he told me as long as you leave 25% of the old water in the tank you will be fine and i said are you sure he said watch and i sat back and watched him and thats what he did filled the tank right up with water right from the garden hose and the fish were fine and then i said well what about the ben bac and he said watch this he whiped out some colonized bac and put some in the tank and said thats all u need and his fish were fine and have been for years
.