A Few RO/DI Questions

[BodiBuilt]

My old ($150 Coralife Pure-Flo II 4-Stage) is due to have the TFC membrane replaced...

My questions are:

Is it worth purchasing a new membrane for, or should I spend that money towards a new upgraded unit that has a built in pressure gauge and dual TDS meter? (mine old unit has neither feature)

If I do decide to upgrade to a new unit, I see there are some available which remove chloramine...

Does any one know if EID is using chloramine to treat our water supply?

Does anyone (locally) have a accurate kit for testing my source water for chloramine's?

Is there any reason to not just go ahead and purchase a new unit designed for chloramine removal, even if my source water isn't currently treated with chloramine (aside from the extra cost and additional filter to need future replacing)?

 

[Tweakes182]

This is a good website to do some reading from.
http://www.buckeyehydro.com/faq/

Or feel free to give me a call this evening. I got to make a three hour drive so I got plenty of time to answer questions. I just upgraded my personal RO/DI its now a 7 or 8 stage I guess way over kill and excessive but I had a lot of spare pieces laying around so I did it for fun. Also just finished installing one in my dads house working on installing one in Hannahs parents cabin and redoing my brothers old one because his city water pressure was too high and busted a canister.

 

[psykobowler]

I use the regular airwaterice typhoon III ro/di system. I purchased another typhoon III from a local reefer recently and I merged the 2 to an 8 stage system. You can easily add additional chambers with the right plumbing connections. Mine is as follows:

tap -> 5m sediment -> booster pump -> lignite small particle carbon canister -> catalytic carbon canister -> 5m carbon block -> 1m carbon block -> split into 2 filmtec 75 gpd RO membranes then back into -> brs di color changing resin -> brs di color changing resin -> storage tank

If you have 2 di resin in series it prevents tds creep. The first di get worn out first then you replace it when necessary.