ek duraclear

Using this for a new loop i'm putting together, and in the process of leak testing i have encountered an issue with clouding after a matter of hours. https://www.overclockers.co.uk/ek-water-blocks-ek-duraclear-tubing-16-10-clear-3m-wc-9dc-ek.html Rig was left to run for 24hours to leak test...