View Full Version : ro di unit

08-03-2008, 11:51 AM
im looking for a ro di unit but i would like to put one that i can use to conect to the fridge for ice and drinking water and to also use it for fish :D any recommendations? what kind? brand gpd etc? :confused:

08-03-2008, 07:36 PM
does somebody here has one of those units?

08-04-2008, 11:32 AM
nobody?? :confused:

08-04-2008, 12:13 PM
I don't have one, but they've spoken about them numerous times on Pet Fish Talk (http://www.petfishtalk.com/) and often recommend one of their sponsors, Aqua FX (http://www.aquariumwaterfilters.com). Callers to the show have reported great results with Aqua FX equipment (for what it's worth). That is where I would start, personally.

08-04-2008, 12:18 PM
Go to Buckeyefieldsupply.How much water are you wanting to make a day.All that goes on the icemaker is a carbon filter.

08-04-2008, 04:34 PM
Why do you want one?

For freshwater aquariums there not 100% necessary. The RO/DI unit will take out the heavy metals and dissolved solids, but nothing that'll benefit the tank greatly.

IMHO (in my humble opinion) a triple filter system would be a better (and cheaper) investment. 5 to 10 micro sediment filter ---> carbon filter ---> carbon filter. Or even a double filter system 5-10 micron filter ---> carbon filter.

Explanation of Revers Osmosis (http://en.wikipedia.org/wiki/Reverse_osmosis)

Explanation of Deionized/demineralized water (http://en.wikipedia.org/wiki/Deionization)
(about half way down the page)

08-04-2008, 10:44 PM
i want one for drinking water and later if i need to use it for aquarium use it can be usable :)

08-05-2008, 10:30 AM
Awww, gotcha!

I'm not saying it isn't recommend for aquariums, but if it's for aquariums only it's a little overkill for the cost.

I know www.ebay.com has some good deals. I was watching a few auctions for them recently as a buddy of mine wanted it for his drinking water, too.

08-05-2008, 10:41 AM
Try this site (http://www.melevsreef.com/ro_di.html). This guy is from DFWMAS & sells them pretty cheap & it's one of the best ones out there for a value. 100gpd @ $169 bucks is a pretty decent price. I 've seen some a little cheaper, but a lot of the dfwmas folks have bought them from him & none have had complaints with thier units.

08-05-2008, 10:47 AM
Hmmm, what are the enter makings of an RO unit (not including the DI)?

Pre-filters and a RO membrane, right?

Why not DIY for $70 or less (filters and membrane costs)?

08-05-2008, 10:51 AM
how do i diy? any info?

08-05-2008, 10:56 AM
Not 100% sure yet... working on it :D

My thoughts... two inline carbon filters, then the RO membrane.

Would need an exhaust & outlet for the RO membrane (the exhaust would still be really good, double filtered water).

From my understanding all you need is the line pressure for the RO membrane, but not 100% on this.

Also, not sure what fittings the membrane(s) require. Might require the actual RO housing which would drive up the cost quick.

08-05-2008, 11:27 AM
yeah the ro membrane i think it will require that housing to screw on :D

did you sent the plants? :)

08-06-2008, 08:33 AM
I would suggest you contact a man called Randall B at simplydiscus.The 2 things about R.O. sytems you should no is R.O. water is stripped so pure it is good for nothing.( no health benfiets for drinking it and fish can not live in pure R.O. water) also un less your line pressure meets the manufactures pressure 60 to 80 psi.You will not get the amount water per day.Also temp of water plays a big factor also. At my house pressure is 40 psi on a 75 gallon a day system I only get 35 gallons a day.I added a pressure pump on it.Now get 100 gallons in 8 hrs with 82 psi.So you need to watch what you are doing or needing.Just my 2 cents on R.O. systems and becareful what is on e-bay