Hey folks, it's been awhile since I've been to a forum since I tend to keep to myself most of time so please bear with me. I've been doing aquariums for 19 years now, starting off with a 10 gallon fish tank I bought in a starter kit and March will make it a year since I've upgraded to a 20 gallon tank. From July to last week I've had trouble keeping fish in the aquarium because one day I've just added water into the tank and the fish started to die off. About a month or two later I find out that due to a salmonella scare, the town dumped a bunch of chlorine into the water supply making it lethal for the fish. Now a couple of weeks about I finally found the stuff that would get rid of it. A few days ago, in order to test it in a way, bought a betta from the local walmart and turns out that not only is the tank safe, I have a happy betta.