What is rydlyme?

The general ideal of this jollop is to mix it at a ratio of one part Rydlyme to one part water and then pump it around your raw water system. Before you begin, you must remove all your engine anodes as Rydlyme will gobble them up. It is, however, perfectly safe on most other materials, including (but not limited to) the following:

Most alloys – The rule of thumb is that if the alloy is designed for use in a water system (aluminium engine block etc), which most marine equipment is, the alloy should be compatible. If in any doubt, email Rydlyme’s technical department (www.rydlyme.co.uk). Also: iron; HDPE; copper; ceramic; gelcoats; glassfibre; copper nickel; PVC; steel; Teflon; plastic; titanium; stainless steel; painted surfaces; rubber (seals/gaskets).

I sourced the Rydlyme from the good people at French Marine in Brightlingsea, who suggested two litres would be ample to do the job.