I got a 30g brute trash can to mix my saltwater and my TDS out the RO/DI is at 0 and I just got this brand new RO/DI system like 2 months ago but I check it in the brute and it goes up to 10-15 TDS I cleaned it with vinegar thought it was dirty but I checked it after and it's the same is the plastic bad or I got the wrong brute trash can