RE: [APD] sand choices

["Wise, Nicholas" <Nicholas_Wise at lgeenergy.com>]

> >I've used it for decades. Works fine. It contains metal particles 
> >though which you could remove with a magnet. I don't bother. Recall 
> >Horst and Kippers water analysis of crypt water. 1.5ppm of 
> both ferric 
> >and ferrous iron.
> >  
> >
> I take it does not vacuum well?
 
It is a skill that must be acquired from experience.  You have to sort
of skim above the surface.  It can be done, though.

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