Normally you would use washing Soda and also place Anodes into the bath and then hooking up a battery charger to both the anodes (two of) and the job, thus finishing the process in less than 24 hours and not a month as you suggest.
Cheers, BB.
I live a 24 Hour lifestyle, but every now and again I seem to fall asleep, well at least that's what my wife tells me.
