You messy mofo!

That DI bit is news to me...gracias.

Tomorrow a bigger, better, badder water softner unit is arriving here. (thats more for household use, but will help with overall H2O quality before it hit the solution tank)

RO is next.
tds too.
oh, and calibration goo. I'll prolly do a goof thing like pH some jello on the super thin side for that!