I went through that the first time, med is all I use now. Between the stuff Ron and I have been doing definitely a time saver, really need a two stage compressor, have a one stage now, might just change out the one stage comp pump to a two stage next time they are on sale.
I have several hundred pounds of media at work you can have. Was run once through a dustless blaster (with water) to clean a rusted tank. Not exacly sure what it is. Glass of some sort.