Which brand of ro membrane?

[dmh41532]

I need to replace the membrane for my coralife pure flo unit, there are so many brands out there, is there one that is really good? Our town water has a lot of iron and sulfur.

 

[AZDesertRat]

Spectrapure. They are the only vendor to specially treat all their RO membranes which is proven to improve the performance then to test them for quality control. Everyone else ships dry, untreated and untested you get what you get membranes.
Make sure you get a matched capillary tube flow restrictor and take the time to trim and adjust it for an exact waste ratio for your water conditions.

 

[dmh41532]

How do I know to to trim the flow restrictor to my water conditions?