The 3rd stage is a carbon filter and it looks like carbon leaks through to the RO membrane as the RO chamber had black staining after the carbon element. You must log in or sign up to reply here. Wow, detailed question. Similar Threads: RO membrane question about flow rates. In the past, I would change the lowest numbered elements more often than the higher numbered ones, so the 1st stage 5 micron got changed the most often, the 2nd stage 1 micron less often and the 3rd stage carbon element even less often.
A simple 5 micron sediment filter, membrane, and a post carbon should suffice. Your name or email address: LLigetfa , May 13, 2013.
Yes, my password is: I also increased the softener regen from twice to three times but also reduced the amount of salt per regen. When I was using potassium it had an undesirable taste and smell. Forgot your password? Considering the low cost, it is now considered a consumable filter, not some fragile, high priced filter that we should spend too much time worrying about.
What happens to a membrane over time? All that being said, many years ago a residential membrane cost 5-10x as much as they do now. Show Ignored Content. How long does your RO membrane last?
It is much more complex than this, it would take dozens of pages, but since the cost of the membranes is so low and theior durability is so much higher than it has been in the past, the need for training people how to protect their residential or light commercial membranes has been virtually eliminated. Simply replace the membrane when the performance drops out of specification. Feb 6, 2011 Occupation: My water has lots of iron and manganese so it smells and tastes horrible.
Water Softener before Pressure Tank. Anyway, the wife complained about the taste so I did a complete cleaning and replaced all 5 stages including the RO membrane.
Would it warrant more frequent replacement or should I replace the 5th stage carbon more often? Another question about RO membrane flow rates. I will answer it in a simple manner.