RO/DI--people who have it can you help me?

[banditpowdercoat]

My source is 500-700PPM, and I routinely get 10-11PPM after DI

[sharuq1]

If I were you, I would change out your flow restrictor for a 75 gpd, and get a 75 gph membrane that is 98% efficient.

Flow restrictor? What exactly is that? Is it the valve on the input or the metal valve on the output? Or is it something else? Are you saying I will need a whole new RO membrane?

[sharuq1]

Also, how do I flush the membrane? Do I turn the wastewater so none comes out of it or do I turn it so it's as high as it can go?

This is really disappointing...I can't afford to buy a new membrane, nor a booster thing.... I do have some DI here...should I just suck it up and change the DI a gazillion times?

How high can TDS safely go before I have to change things? 10? And if I have TDS should I be using Prime in my water?

[mark]

Aqua-safe instructions, section 7.1 talks about the flushing valve and the handle position.