Hey everyone so just trying to understand where the tin and aluminum is coming from. here is the icp tests for thesaltwater mixing barrell and display tank. it has a 7 stage rodi unit and is pvc will post pic of setup then in the middle it has a industrial pump which mixes the water around in the second barrell. which has flex hose going to the hose which i use to fill up rodi and for water changes. I use tropic marin for salt btw. what could be causing this? also have a sediment filter running in the saltwater barrel when mixing.