Dont know if your still thinking about this, but after each gallon of esv used, dose 30-60ml of each nyos trace bottle slowly into a high flow area because it is soda ash based. There are three parts to the nyos trace, two of them go with the cal/mg and one with the alk. If you finish a gallon of esv alk, then add 30-60ml of nyos trace for their alk straight to the tank. Same for mg/ca, when you finish a gallon, add 30-60ml of each nyos mg/cal trace element bottle. To start, do 30ml of each nyos trace bottles per gallon of esv to be on the safe side. Can check with icp test a month in or so to see if an increase/ decrease of any of the 3 parts is required for proper trace levels. Be careful with dosing as this is not entirely well documented, however follows how nyos reccomends it for their products, transferred to the esv format. Do not mix the esv with nyos traces as it is not known if any of the additives are safe to mix with other brands or not. Just add seperately after finishing 1gal esv as advised, and check with icp.