I have just moved my ro to a different place plugged it in and with no pump it was clear waste but with pump on the waste was a slightly milky white the pure was pure and clear
It's a 40 40 pumped membrane 3 years old I have filled a 1000ltre tank it's pure and clear but the waste wa not I switched it off left it for 2 hours and now it's fine is this a sign for membrane broke I was 50 without the di and pump for a whole then I switched pump on and it went to 7 then I put it through di and ran 1000 litres fine now but why slightly milky waste water
