Ya it does cause a lot of my live stock died last time, but it did'nt cause my new tank any problem, btw
my new tank is not using that brand for starting, I uses another kind, its just that I wanna do some water changes, so I uses this, luckily I tested it before doing the changes, if not......hahaha. I forgot the brand, because I thrown the bag away long ago, but I'll post it tomolo, I go to LFS
see. Many people uses this salt without a problem, don't know why mine only, hahaha. The cost is around S$7 ( US $3.50 ), is this too cheap for marine salt?