Testing my RO system water Help

[Ayman]

If you want to save yourself time, and maybe money, I'd get all the standard testing kits now and just run through all of them. If things aren't dead, I'd just run some carbon and only do aggressive water changes to move a specific, measured, number down at this point (eg phosphate).

Optionally get a Triton ICP test which can find if anything else weird is in there that you should deal with

Added a carbon reactor last night just in case and will keep the ICP test idea in mind, although I thing i have seen some one that said their results are not that accurate