Poor customer had very recently had a brand new driveway and sidewalks poured. With that job crossed off his list, he decided to revitalize his front lawn. Soil test results said it was "iron poor" and the nursery told him to apply iron pellets to help amend the soil. His only mistake was that he neglected to blow the pellets off of his new concrete work before it rained overnight.
This was a rather large area project for our first experience with F9 BARC on concrete. The below pictures are of the test section we did in the first joint section of the sidewalk.
As it is getting cold, if you have F9 on the shelf, it is worth moving it to somewhere warm. When it gets cool, a few of the ingredients in F9 will fall out of suspension. You can re-dissolve them with a little warm water, but it is kind of a pain and makes dilution ratios harder afterwards. I heat my shop, but only to about 40 degrees, so I take my F9 home and put it in a closet in my house.
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Chad A. Eneix, President, Water Dragon Inc. chad@waterdragoncleaning.com