+Dean Oros Dean, two things usually happen: the good water comes to a crawl and all the water comes out the waste line instead (at 8:1 or 10:1 ratio), or the TDS coming out of the membrane spikes all of a sudden ( measuring 40, 80 or higher). That's why you do want to measure the water's TDS prior to the DI stage so you will know if all is normal or not.

That is a great idea! Never thought of it.

This worked great for me. I was unable to open it before I warmed it. Thanks for a great tip Robert.

You obviously made a mistake in the connection of the membrane

@@jungle6815 Seriously, if your going to be jerk just hold your comments to yourself.

@@sasaucier9407 im juat tryna help

Yes, I do. www.melevsreef.com/product/de-ionizer-add-on

No, not at all. But if you want to sanitize all parts from time to time, you can do so with bleach water (10 parts water to 1 part bleach, rinse very very well, and let air dry overnight).

okay nice! that puts me at ease a little bit. he had me quite paranoid about handling the filters when i change them! thanks for the advice!

I've never worn rubber gloves or anything, no. Never even thought about it, but I tend to keep my hands clean all the time. :)

If you don't restrict the flow, all the water will go out the waste line and none will pass through the membrane. Both work together to make pure water.

David Cher David, I don't know. I did what I was told 15 years ago and repeat that good advice. This is only done with a brand new membrane. After the first five gallons have been tossed out, it's good to use from then on.

I believe you get very high TDS as the membrane is coated with preservative.

That's odd. I'd need more details. Did you check that your cold water feed is fully on? Does this RO system have a pressure gauge to indicate pressure?

This is for the white membrane housing. melevsreef.com/reefshop/reverse-osmosis/parts/membrane-o-ring