Unfortunately my whole marine tank/reef setup is for sale. I will be very sorry to see it go, but it will be a wonderful setup for someone to start acquire, not to mention a bargain. Please see here
Its used at least once a week as per the guidelines, and its fine. Its only the membrane that you need to keep moist, which in the one of the top compartments. What you see it the carbon.
All the elements were replaced 4 weeks ago, and its currently producing RO water at 0ppm, you can't get purer than that.