I couldn't find much on here when searching, but I am curious about down streaming ratios. For example, my PW down streams at a ratio of 1:7. Does this require a change in the house mix formula at all? Will a regular 5 gallon mix still work fine at this ratio?
I'm thinking 1 to 7 is pretty strong for a ds injector. Most are in the 1 to 10 or 1 to 12 ratio or worse if you actually test them. I'm thinking it should be fine for most needs.
That's what I'm coming to find out as well. I guess the question now is what should my mix strength change to?
To answer your previous question, I am using an Ex-Cell ZR3600 with Bob from PT's down stream kit. I typically do residential, washing houses and driveways, mainly brick, stucco, some vinyl, and wood. I actually think the strength needed might be comparable for Florida and Louisiana. Houses get really grimey down here.
Washed this with a bucket mix 3 gallons of 12.5 sh and 2 gallons of water and downstreamed. Probably less than 1% active sh hitting the siding.
Washed this with household bleach maybe 3.5 gallons 1.5 gallons water downstreamed.