The product is concentrated and can be diluted. I left it full strength because in certain applications full strength is needed – such as on boats kept in the water all season on my bay. Literally, at then end of the season, the thickness of calcium crust could (with the right device) actually be measured. In MN, a 1:1 dilution worked great on the iron-based spots and residue. Other lakes required varying levels of concentration from 1part product to 5 parts water to 1:10 – all depends on the water. You’ll be the judge for your particular application. But in every location the Boat Brite Hard Water and Minerals Remover worked very well!

Hard Water & Mineral Deposit Remover is made with health and environment conscientious chemistry for tough freshwater and saltwater surface care problems!