Use 5 mL per 680 L (180 US gallons) twice a week (or as needed). This dose increases phosphate by 0.15 mg/L, and potassium by 0.06 mg/L.
When used with aquavitro's® nitrogen supplement, synthesis™ at the same dose (5 mL/680 L (180 US gallons)) both products provide nitrogen and phosphorus in a 5:1 N:P ratio.
For smaller dosing, use the included pipette. Filled to the base of the bulb, the pipette holds 1 mL.