jameson_uk
Member
I am just checking I have my calculations right as reading another thread I am now not sure I am adding the right amount of iron....
@Zeus. kindly provided me with some FE EDDHA which the manufacturer said
My tank is 180l so each ml dosed would be diluted by a factor of 180,000 (I know the actual volume is less). So at 5,000 ppm going in being diluted by 180,000 I would need 18ml a week to be adding 0.5 ppm???
Is this actually the right amount to get EI levels? (I have actually been doing about 10ml as tank is lower tech, there is some iron, albeit it might not usable, in the trace mix in my main ferts and presumably a little in the tap too)
@Zeus. kindly provided me with some FE EDDHA which the manufacturer said
I mixed up ~18.75g of this with 250ml deionised water which works out at 5,000 ppm? (4,000 times more concentrate and 1.25 as much)To provide 1 ppm of iron you need to dissolve 15 grams of Solufeed Fe 7.0 EDDHA in 1,000 litres of water.
My tank is 180l so each ml dosed would be diluted by a factor of 180,000 (I know the actual volume is less). So at 5,000 ppm going in being diluted by 180,000 I would need 18ml a week to be adding 0.5 ppm???
Is this actually the right amount to get EI levels? (I have actually been doing about 10ml as tank is lower tech, there is some iron, albeit it might not usable, in the trace mix in my main ferts and presumably a little in the tap too)