help fish start dying

[Madreefer]

Originally Posted by mohammadali

there is a pet store manger told me when i add tap water i should add kh into tap water all the time i bought a kh bottle from him

HUH??? That's a new one. No offense to those who my work at a "pet store". But that is where I have heard the most bad information given out to people. Go to a store that specializes in SW. You should NEVER add anything to your tank that you do not test for. Get yourself some test kits and try to learn to do your own testing. And don't let the stores try to sel you the Hagen Master Test Kits which are for sale at most "pet stores". And to answer your question on what's Kh without gettin into too much long winded detail, it's Alk. By the way the quotations are for the chain stores. Once again try a SW specialized store.