So I’ve recently purchased my second saltwater tank being the Waterbox marine x 60.2 and I decided to have custom hard plumbing, problem being the only coloured pvc available Is in imperial measurements and the Waterbox comes standard as metric, took a lot of time for me to figure out how I was going to configure this build as the conversion was very confusing and time consuming as my first time plumbing , and so Ive decided to make this thread to save anyone who wants to do similar some time and money. any questions feel free to ask I’ve made this thread to help seeing as I’ve not seen any threads on this so far