RO/DI question

New filters always read higher at first. I just let my "finish" product line go into a drain for 4-6 hours and its usually good. Also, is it coming out pretty good at the end or is it not producing very much? I've had very bad luck lately with carbon blocks clogging and so its not producing much/if any water and the tds is up. So I'm basically on a rotation schedule where I just swap it out and let the old one dry out then replace it again, even though they were both brand new..

 

Was the system in use up until you got it? If not it may have dried out the membrane and that will kill the membrane, because they can't dry out. They should be put in a vacuum pack bag or stored in the frig. You can buy100gpd Membranes on Ebay for 25 bucks. Just remember if you change your membrane size you will also need to buy/change out your Membrane Flow Restrictor. You will find this inside the elbow fitting to the inlet to the Membrane or it could be an inline restrictor. Filmtec is a good brand and a standard among most R/O units, but GE and others are fine too. They are often manufactured by Filmtec and sold as something else.

I got my R/O system 2nd hand as a Coralife 50gpd and bought a new membrane and filter combo for 55.00 one ebay and bought the 100gpd flow restrictor too. They are like 5 bucks.

If the membrane is old or if it did dry out then it will need replace. Cleaning it by flushing it probably will not work. But its worth a try.

Kyle