ro/di filter replacement

I would, the cost of a new membrane which should last 5 years or longer with proper care is much less than a couple DI replacements which may last only weeks to months.
http://www.3reef.com/forums/spectra...properly-how-do-i-know-when-change-75702.html


Here is info on capillary tube flow restrictors
http://www.3reef.com/forums/spectrapure/flow-restrictor-basics-76423.html

Both of these FAQ came out of the Spectrapure Sponsors Forum here on 3Reef.