Colors comes from the nutrient "poor" surrounding? Do you mean "rich", since you do not use a skimmer? How can color come from nutrient poor environment?
I use a skimmer & still have nutrients in my tank, very low, detectable at the lowest end of the salifert scale (sensitivity tests).
There must be another reason why your tank & colors are so rich? Do you feed live food to your tank, what & how often? How do you balance feeding vs nutrient rich & high parameter tank? Personally, I still quabble over how much to feed & how often...trying to reach that balance.
Also, do you think by dosing B-Ionic that the tank will get Iron & Mang, it supposedly has the trace elements too?