Planted Tank Obsessed
Join Date: Jan 2015
Location: Newmarket, Ontario, Canada
It is what I expected. The iron products in that post are being adjusted because of higher pH. EDTA does not hold up well in higher pH water.
What is your pH? Do you experience clouding when you dose csm+b?
If you do experience clouding, it suggests the EDTA chelate isn't working, and you need more DPTA, probably in the ratio of 3:2 as expected.
However if your pH is low, and the EDTA is staying chelated, then a 3:2 ratio would only overdose iron.