|
07/10/2012, 09:18 AM | #1 |
Moved On
Join Date: Apr 2010
Location: canada, toronto
Posts: 8,161
|
RO/DI unit
What is different, between the RO/DI systems sold at water purification stores.
and the ones used for reef keeping ? they both produce H20, with Zero TDS, and PH 7.0 ... so I assume they produce the same thing ? andhence do the same thing? |
07/10/2012, 09:27 AM | #2 |
Registered Member
Join Date: Jul 2012
Location: Utah
Posts: 145
|
I believe either is good the only difference I know is that the GPD output seems to be less at most water purification stores. Most I have seen are 25-50 GPD and most reefers like 50+ GPD. Just my .02
__________________
Nuvo 30, 165W dimmable LED pendant, Hydor Slim Skim Nano, Vortech MP 10w ES Current Tank Info: 30 GAL Reef |
07/10/2012, 09:59 AM | #3 |
Moved On
Join Date: Apr 2010
Location: canada, toronto
Posts: 8,161
|
so are they the same ?
Ps not asking which one I should buy, just want to know if the units sold for reef keeping do the same as the ones sold by water purificatioon systems ... |
07/10/2012, 10:04 AM | #4 |
Registered Member
Join Date: Apr 2011
Location: Pittsburgh
Posts: 2,174
|
The theory is the same, the filters are often different if we are talking about Home Depot type stuff. If you find an RO/DI that has the same sediment filters, carbon blocks, and RO membrane then there really is no difference.
__________________
Jer Current Tank Info: 40b basement sump, 40b refugium, 30g frag |
07/10/2012, 10:06 AM | #5 |
Moved On
Join Date: Apr 2010
Location: canada, toronto
Posts: 8,161
|
lol jerpa, thanks, but how are the home depot stuff different ? do you know ?
that is the info I am looking for. why is the RO/DI from HD different from the one from BRS lets say. if they both produce the same end product. |
07/10/2012, 02:14 PM | #6 |
-RT * ln(k)
Join Date: Sep 2010
Location: Little Rock
Posts: 9,705
|
They both produce the same end product in theory. Most of the units from HD are meant for drinking water and won't have a DI stage.
Also re the OP. Don't count on RODI having a ph of 7. More often than not it is considerably lower then that. But without any buffering capacity, that number is pretty useless.
__________________
David Current Tank: Undergoing reconstruction... |
07/10/2012, 02:56 PM | #7 | |
Registered Member
Join Date: Apr 2011
Location: Pittsburgh
Posts: 2,174
|
Quote:
To determine the quality of the filters you have to look at the ratings. Not all ratings are equal however. Some rate the actual particle size it filters down to while others use a nominal system that means It filters about 85% of particles that size. With carbon filters you also need to be concerned with chlorine capacity in addition to the pore rating. RO membrane life is greatly impacted by the substances that get to it, chlorine being one of the major concerns. There are several materials that RO membranes are made of and I forget all the differences off the top of my head but this impacts the life of the membrane as well. The rejection rate of the membrane will have a large impact on the DI consumption and most would consider 95+% to be a quality membrane.
__________________
Jer Current Tank Info: 40b basement sump, 40b refugium, 30g frag Last edited by jerpa; 07/10/2012 at 03:01 PM. |
|
07/10/2012, 04:58 PM | #8 |
.Registered Member
Join Date: Sep 2006
Location: Cincinnati, Ohio
Posts: 4,857
|
What you'll find at the hardware store are drinking water reverse osmosis (RO) systems - not RODI systems.
Compared to good quality RODI systems, drinking water RO systems available at the hardware store typically have: 1. lower quality, and often higher priced prefilters 2. Very low capacity RO membranes (e.g., 12 gpd). 3. no pressure gauge 4. no tds meter 5. compression style fittings 6. no flush valve 7. opaque housings Russ The drin |
07/10/2012, 05:10 PM | #9 |
Dr. Reef at ur service
|
purification stores units dont have DI and they have an extra step(canister) for taste removal(waste of money for reef), DI is required for reef, so its not so recommended for Reef in general.
__________________
Water Quality: NO3 0,Phos 0,Cal 440,Alk 7.5,Mag 1300 "Reef Fast, You Crash, Reef Slow, You Pass" Mike's Reef 3:16 Current Tank Info: 350g DT,95g sump, 50g Frag tank, 4800gph return 4x Sea swirls. 6x AI Vega Color. 200# Pukani rock, dual recirculating skimmer, Biopellet, GFO Carbon rx's, Cal rx. Closed loop. 1.5hp chiller, genesis renew. Apex & RKE |
Thread Tools | |
|
|