Coralife Pureflo II replacement cartridge suggestions

[dragonfly1972]

I have a Coralife Pureflo II 100 gpd unit.
It came with a micron prefilter, GAC carbon prefilter and carbon block for the 3 canisters and then the membrane.
My question...would it be an improvement to replace one of the carbon cartridges with a mixed bed resin cartridge?
If so, which one would be the best choice to replace?

Thanks

 

[ericarenee]

So there is NO De- ionization After the Membrane unit...

If not then this is what i would add ..

http://www.bulkreefsupply.com/value-to-universal-upgrade-kit.html


You can shop around for price and so on.. also if you do not get a dual tds meter ..
brs has a lot of info on Ro-di units

 

[dragonfly1972]

I have a triple tds meter installed. It's 4 stage with a pump. 3 canisters and TFC membrane.