Which RO/DI System for FOWLR?

[jhj32883]

Hello,

I just read the water analysis for San Diego, and it appears we have horrible water.

So, I've decided to obtain an RO/DI unit.

I'm looking at 2 different systems and am having trouble deciding which one to purchase.

There's a 4 stage and a 6 stage. I was hoping that someone could take a look at the 2 models and tell me if the 4 stage is sufficient for a FOWLR or if it's better to go with the 6 stage.

Obviously, I would like to go with the 4 stage because it's more cost effective, but I would rather have a healthy tank.

Please take a look and let me know.

4 Stage:
http://www.ebay.com/itm/0PPM-Portab...171?pt=LH_DefaultDomain_0&hash=item19c5bbe283

6 Stage:
http://www.ebay.com/itm/150-GPD-Aqu...059?pt=LH_DefaultDomain_0&hash=item19c4e684fb

Thanks in advance for your help.

Regards,
Jay

 

[Dragon moray ki]

I would say get the six stage it will work better so I would spend a little more and get it

 

[jbonez]

i got a great 75gpd ro/di from
airwaterice.com

 

[whipsaw]

without a tapwater assay and the adsorption specs on the carbon and DI cartridges I don't know that the question can be answered...

however since the difference between the two systems is one extra carbon unit and one extra DI cartridge you can assume that going with the smaller unit will just mean you may have to change depleted cartridges twice as often. However if you buy the larger unit you might or might not need to change cartridges half as often but you'll certainly be changing twice as many carbon and DI cartridges when you do.

Since the change schedule is (as far as I know) time dependent even in undepleted cartridges I'd go with the smaller one and watch effluent quality so as to replace depleted cartridges ahead of schedule as needed. It's more efficient to change a completely used up cartridge than a partially used one.

others may value their time more, and prefer to do less maintenance and initial testing. In that case the larger one would seem like a good idea.