so the ppm out of the tap at my house is around 100 but when i put my water conditioner it jumps to around 500!!
i know ppm isnt an exact measure of hardness but wow, that's alot of stuff in the conditioner, im using this

i got the pond one cause i figure more bang for the buck. but my bottle smells kinda funny, like sulfur, i was wondering if the conditioner can go bad? so far my fish seems to be doing ok, but im a little concerned as i've never smelled anything like this before from the conditioner.
anyone know got any advice?