I have St. Augustine and zoysia growing with no trees anywhere close. I have a 575' well that doesn't have iron in the water. When I lived in the city the St. "A" was a darker green, so I figured I'd shoot some iron. Got the Ortho hose end out, marked off 1,000 ft, fiddled with the sprayer(water) till I found the setting that looked to put an ounce per thousand out. Sprayed some Roots Fe8% last Thursday. I can't see where it's any greener. Saturday, I bumped the sprayer setting 2 more notches and sprayed a stripe down the middle of the zoysia. It's only been 48 hours for that one, but still don't see any evidence. I give up, what am I missing here. You guys say it will turn it so green it will hurt your eyes. Do I need to water it in? Not knowing what I'm doing, I used the sprayer in a manner as if you were painting a wooden fence. I'd go up, turn the sprayer on, walk back in a straight line, spraying about a 6 foot wide shot, walking backwards slowly. Then move over 6 foot and do it again. Help me out. More iron? Water it in? What? Thanks for any help.