I'm not sure I understand what what you're asking, but after two years running, the only additives I use are:
-"City" Tap Water (+8.1pH and up, no RO filter)
-Organic Fish Feed (Aquaorganic brand)
-FeEDDHA or FeDTPA (iron)
-Organic Rock Phosphate
-Organic Potassium Sulfate
-OMRI Calcium Sulfate
-Food grade Magnesium Sulfate
And only in emergencies...
-Muriatic Acid (pH down)
-Phosphoric Acid (pH down)
-Potassium Hydroxide (pH up)
I use 110Lpm Active Aqua air pump in my Bio-filter & and the entire garden is Aeroponics, so any more O2 in the water not nessissary.
Keep in mind, aquaponics only works in fresh water, unless the plants youre growing can handle the Sulfur. Any aquatic plants will only be in competition with the cannabis you're growing, and use up their nutrients.