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[QUOTE=housewasher;24471][/QUOTE]
Yes, very nice. +1 on what you used…
it was a custom blend OX being the main ingredient.
Looks Good.
Down-streamed or applied straight?
Nice job Dave. Dave Macs Power Washing and Painting is the one to call for Rust removal in Charlotte NC.
WOW! Big difference D-Mac!!!
Great Job!!!
Removing fertilizer stains like those takes an experienced touch. Looks great Dave.
Nice job Dave looks great
Sent from my SAMSUNG-SM-G870A using Pressure Washing Resource mobile app
Nice Job! Looks Great!
I’m new to pressure washing and just stumbled upon fertilizer stains. They have it on the edge of the driveway and all over the back patio. Both are cement.
I realize from reading the forum that F9 is what I’m probably going to need long term for this sort of thing, but at the moment funds are low and I need to get something local that will work.
Does OX stand for oxilic acid? Can anyone help with a ratio of ox to water for fertilizer stains? They didn’t run like in your pictures, dark brown dots all over so it’s probably going to take a strong mix. Any other basic ingredients (and ready ratios) anyone would be willing to share?
There are plenty of other threads on rust removal using oxalic acid but the link above was the first one that popped up when doing a search.
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