It's one thing to be told to take good care of your RO Membranes, but sometimes it helps to see what one looks like that hasn't been taken good care of.
This is what a good membrane looks like:
Now here is what a RO Membrane looks like covered in biological growth and slime. You can see the spiral layers of membrane material inside the round ports
is all black. This membrane only had 50hrs on it and was a year old.
So the moral of the story, don't let this happen to you. Take care of your membranes and don't let the water
maker sit for too long of periods without running, fresh water flushing