I have the Duo60 watermaker, and we're getting ready to leave the boat for 3 months in Grenada. I planned on sterililzing the watermaker with Sodium Metabisulfite (SM). I also have the sterilizing cartridge.
The problem is I don't know how much of the SM to put in the cartridge. The Dessalator instructions say to put the whole package in, but the SM I have is from a bulk supplier, so this is not a Dessalator package.
The instructions on the package of SM I have says to use 2 oz per gallon of water to sanitize. The Dessalator instructions (for the bucket method) says to combine the package of SM with 8 litres of water (about 2 gallons). So if it's only a math problem there should be about 4 oz of SM in the package...which means I should put 4 oz in the sterililzing cartridge.
Does this sound correct to those of you who have done this deed?
Thanks for the help!