Using bubble magus dosing pump. Might upgrade to a german brand in future, I feel it is slightly more accurate in terms of dosing. For bubble magus if you set 8ml dose 4 times over 24 hours, each time dosage is usually less than 2ml. Yes dosing C-balance Part A & Part B. Will switch over to Fauna Marin Balling light, once I have the funds. That way trace elements (Ultra Trace B ) can be dosed together with the 3 parts and fully maximize the capabilities of the dosing pump.