Which 4 stage RO unit to choose?

[Pallen81]

I thought about getting this one.. What made up my mind, with the other I can immediately tell when the DI resin is spent because I can see into the container because it is clear.

Not to steal the threat, but how do you know when the DI resin is spent. Mine is currently a tannish sort of color with green mixing in. Is the green spent resin?

 

[fsn77]

The color changing DI resin I have starts out a dark blue-green and turns tan-orange as it's spent.

 

[arpy]

This is the one everyone in my local reef club raves over and I'll be ordering next month.

http://airwaterice.com/product/1TYPHOONIII

So far I am very happy with this unit. It was easy to set up and the RO/DI water did test 0ppm for TDS (Total Dissolved Solids) on the first batch. I guess I can't ask for more than that!

 

[Grins]

Glad it is working out for you.