fish dying (long Post)

[pirate]

I'm using hagen and nutrafin test kits (ammonia is a nutrafin kit). I know I need better ones but so far they have been good. So I thought you guys were going to tell me to do a large water change so I got set up last night to do one befor I went ot work. Well I tested it and it has a high PH value as well It matches my tank almost perefectly. So did I get a bad batch of IO? Is IO a high PH value? Will it come down on its own? If not how do I lower it then? I just started using this salt the other bucket ended and I opened it up and all my troubles have started it seemes. Not too sure when it happened to me using the new IO salt. I got it on boxing day.
Thanks for all the help so far I really appreciate it.