For 125 gal
Plantex CSM+B 72.5 gm (approximately 16 3/4 teaspoons) to get PPM per full EI level....which is 1 PPM right?
This only gives you 1/2 what EI recommends: to reach target level of 1 PPM you have to Double the amount of CSM+B accordingly to Wets Calculator.
So which 1 is it?
A single dose of Plantex should target iron to a level of 0.5ppm. Wet's calculator targets 0.5ppm of iron for Plantex. Not sure where you came up with 1ppm. Remember, this is a single dose not what we want our tank levels to remain at.