which ro/di unit

Looking at 2 RO/DI units don't know whats better.

Maxpure

Bulkreefsupply

 

Both are good units IMO. I have an airwaterandice RODI unit called a reef keeper. Check them out too. I have had mine for nearly a year and I am pulling 2 tds water on the original filters.

 

i have the BRS one, in my opinion a RODI unit is a RODI unit no matter who it's made from. they are all meant to acheive the same result. i have two buddies, one has a air water ice and the other has that exact spectrapure system. we all get 0 tds water, i simply went with BRS because it was local to me and was the first one i found.

 

There really is a difference in RO/DI units even though visibly they may look the same from the outside. Its what is inside that counts.
Spectrapure is the only manufacturer or vendor to treat and test their membranes for performance and quality control. They are also the only manufacturer to custom blend all their own DI resins in house based on thousands of hours of real world testing to perfect those blends. They are also one of the only vendors to use the much better absolute rated sediment filters versus the lower cost and lower performing nominal rated filters and to use the better capillary tube flow restrictors.

The MaxPure is a much better system and will save you money from day one on membrane and DI replacements if you follow the recommended maintenance that all vendors use. It includes a 0.5 micron absolute rated sediment filter, a 0.5 micron 20,000 gallon carbon block, a treated and batch tested 90 GPD high rejection rate RO membrane, custom blended reef specific DI resin, an inline pressure gauge and a capillary tube flow restrictor you trim yourself for an exact 4:1 waste ratio.