Nope don't have one of those. How do I get one? Who sells them?

Well I picked one up from bulk reef supply. If u have the hose that came with it chances r it's stuck inside or the seller might have it. I assume u can find one at any water additive store? The one included with the vertex was always in the blue hose in my experience. But it didn't have the long stringy tail like show in the previous post

Just ensure u match the flow restrictor for the size of the membrane in your ro unit. Eg 100 gpd matches with 100 gpd

Hope this is ur issue

I have the same system and it pretty much comes complete I am sure that it has the flow restrictor in , have you done a test say like for an hour and see how much water it produces ? It is a 100g per day not per hour right ? ...... And what I learned from someone else on here fill two jugs at the same time ,one for production and one for the waste it should be 4:1 or so

I love my puratek I feel it's one of the best ro/di units out there IMO I would find it hard to believe its not working well