Haviland Durachlor Borate BoostThe Durachlor Borate Boost is a weekly treatment product after the initial use of Durachlor Activator Plus. It will effectively help to maintain the already established level from the Activator Plus treatment. Continued use of this product is will help to maintain proper water balance, reduce the total amount of maintenance needed, and water clarity. Make your maintenance routine easier, while also making the water as clear as possible.