CL_;47002 said:
oh yeah, I forgot that it would be in the crystalline form when we dose it. So would it be safe to say that the time it takes to break down depends on what all we have in our water, or should it be the same no matter what?
Yes, I'd not worry much about it, 10-12% is typical for the Fe% once it's used. Some forget to include the water in the weight when they make spread sheets and dosing calculators.
Same for CaCl2 and sometimes MgSO4.
This throws off the calculations some, but it's not going to make or break anything.
Plants do well and if you add above the critical concentration requirements for 90% max yeilds, then it makes no difference.
So if it's already non limiting, you are in good shape.
Nothing to worry about and no need to be interested in razor sharp accuracy etc.
Trying to hit the elephant, not the mouse.
Regards,
Tom Barr