15 ml /100 Liter (26 US gal) = +1 mg boron/liter
maximum Dosage 2 mg boron/Liter/0,26gal / per day
Please read the manual very carefully and make sure that the solutions are kept out of reach from pets and children. Check the actually necessary amounts before each use and do not overdose. Although this technique is very gentle, an overdose may kill corals.