I am shopping around for Aluminum Sulfate from distributors. The price ranges from a low of $.25 per lb. (50 lb. bag at $ 12.50 each)to $.49 per lb. (50 lb. bag at $ 24.50).

Why is there such a price flucuate and should I care or just buy the cheapest?

I told one guy I don't need labratory quality - just cheapest Aluminum Sulfate. One guy said his is the best as it's 98%. So what gives??

I will be apply this in aprox. 13.5 acres of water so the cheaper the better.

Help please.

Thanks!