Vee Jet Stainless Steel 1/8 Inch 9502 Stokes this is the cheap filter

this is the cheap filter you want catching the loading before it gets to the HEPA

Tap water and rain water are dilute and weakly buffered

and it is named in the parts lists of:

Anti-Allergen Filter Enhancer improves the efficiency of the filter without decreasing the airflow through the system

HydraMaster RX-20 — Solution Valve Kit

Vee Jet Stainless Steel 1/8 Inch 9502 Stokes this is the cheap filterVeeJet flat spray nozzle, 95 degree, Stainless steel A 95 degree flat fan tip rated at 0. 2 US gallons per minute at 40 psi, in stainless steel, with a 1 8 inch connection. Specifications Spray angle 95 degrees at 40 psi Rated capacity 0. 2 gpm at 40 psi Connection 1 8 inch Material Stainless steel Pattern Flat fan How to read the number Every flat spray jet in this range carries a four or five digit number, and it tells you exactly what the jet does.