cartrige replacement for RO/DI

[witelytr]

I think my RO/DI needs new filter and resin. How much am I looking at and where is the best place you have found? it is a 4 stage.

[a2fire2i]

Not sure how far you are from John at FAIOS, but I would check with him if you are close.

Could also try
http://www.thefilterguys.biz/filter_packages.htm

[SoundsFishy2me2]

I agree with Corey. Go see John at FAOIS if you can. He has the best deal and high quallity items. Besides it's a great store to go check-out anyway and 'having a reason to go' justify's the trip! You might just find a new coral or xmas gift for yourself too!