Deejay, I don't want to rain on your parade (well, to be truthful I guess I don't much like parades, and I think rain makes them more amusing on television) but you might check out this information before you buy that product:
http://www.chemlog.co.za/msds/Alushine.pdf

Alushine is simply a dilute form of sulphuric acid with a small amount of bifluoride, and some wetting agents. It is similar to all the other acid cleaners we have discussed in this thread, but has only one of the acids, and not the most effective one at that.