Fernox products are available to Buy at BHL. Fernox 'Makes Water Work'. As a leading global player in Water Treatment products, Fernox have been responsible over the years for producing a range of innovative products which include traditional plumbing products and water treatment chemicals as well as equipment such as System Filters. Amongst the most popular Fernox products are Inhibitors, Cleaners and Leak Sealers. BHL are stockists of a wide range of Fernox products meaning we are able to offer Fast Shipping and Low Trade Prices on all Fernox products.