I love F9. Loooooove it! insert Drake song lyrics about my love for F9. I'll send you pics when I get my lazy butt up to grab the phone off the charger, but I already used 30 gallons on Oxy/High quality H20 mix today on two MASSIVE rust stains on a concrete curb and asphalt.
One was 4 parking spaces wide and ran the width of the parking lot from some weird dump valve type thing on the exterior of the building.
The other was from a dumpster that ran about 40 feet long and 6 feet wide.
Long story short, I'm not paying for that much F9 when the customers primary focus was the leaking fire sprinkler rust (there were a ton), and the concrete and asphalt they just wanted "lessened". I also don't have time for it to ship. They want the other 3 finished tomorrow before their "regional VP" leaves.