Oh, haha it's probably just iron, but I feel like since it's a Scott's EX product, it'll work,lolUgh. What's the difference between MossEx and other iron products?
Ferrous sulfate monohydrate: 17.50%
Moss out at Lowes has 32% of the same active ingredient. Same cost as MossEx, but it's available locally instead of Amazon. I'll try that in a few spots and let you know.