Reef Central Online Community

Home Forum Here you can view your subscribed threads, work with private messages and edit your profile and preferences View New Posts View Today's Posts

Find other members Frequently Asked Questions Search Reefkeeping ...an online magazine for marine aquarists Support our sponsors and mention Reef Central

Go Back   Reef Central Online Community > General Interest Forums > The Reef Chemistry Forum
Register Blogs FAQ Calendar Mark Forums Read

Notices

User Tag List

Reply
Thread Tools
Old 10/13/2019, 12:33 PM   #1
loudell
Registered Member
 
Join Date: May 2003
Posts: 367
RI/DO canister order???

What would be the best order of water flow on a municipal water supply for the following canister filters:

- 5 or 10 micron sediment filter
- Activated carbon filter
- deionization resin
- RO membrane


loudell is offline   Reply With Quote
Old 10/13/2019, 03:32 PM   #2
hkgar
Registered Member
 
hkgar's Avatar
 
Join Date: Oct 2002
Location: Dewitt MI
Posts: 4,922
- 5 or 10 micron sediment filter No 10, use a 1 or .5
- Activated carbon filter
- RO membrane
- deionization resin


__________________
Gary


180 gallon, 30 gallon sump, 8 80W ATI T5's, MTC MVX 36 Skimmer, Apex controller Aquamaxx T-3 CaRx

Current Tank Info: 2 Barred Rabbitfish, Yellow/Purple, McMaster Fairy, Possum, 2 Leopard Wrasses, Kole, & Atlantic Blue Tangs, 2 Percula Clown, 4 PJ and 2 Banggai Cardinalfish , Swallowtail and Bellus, Flame, Coral Beauty Angels
hkgar is offline   Reply With Quote
Old 10/13/2019, 06:36 PM   #3
Vinny Kreyling
Registered Member
 
Vinny Kreyling's Avatar
 
Join Date: Nov 2002
Location: Miller Place, NY
Posts: 6,085
Yeah, 5/10 micron & you might as well leave the cartridge out.
Both carbon & sediment should be the same or lower on the carbon would work.


__________________
250 gallon mixed reef, 2 Reefbreeder's Photon V 2, RD 3 Speedy 80 Watt, DAS EX-3 Skimmer, MTC mini cal, 2-3/4" Sea Swirls, Aquacontroller & 6 Tunze pumps.
Vinny Kreyling is offline   Reply With Quote
Old 10/13/2019, 11:03 PM   #4
bertoni
RC Mod
 
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,120
The deionization has to go after the RO to be of any practical use. I agree that the sediment filter should be first, assuming it is coarser than the carbon filter, which is what I would expect. Does the carbon filter have a micron rating?


__________________
Jonathan Bertoni
bertoni is offline   Reply With Quote
Old 10/14/2019, 09:10 AM   #5
loudell
Registered Member
 
Join Date: May 2003
Posts: 367
Yes, the carbon filter has a 5 micron rating....


loudell is offline   Reply With Quote
Old 10/14/2019, 10:27 AM   #6
mcgyvr
Registered Member
 
mcgyvr's Avatar
 
Join Date: Sep 2003
Location: North Carolina
Posts: 19,615
Always filter out the sediment first.. Then filter out chemicals like Chlorine,etc.. with the carbon to protect the membrane from it.. Then the RO membrane then the DI stage removes what the RO couldn't.. ..

This is how ALL water filters work regardless of municipal or well water or whatever..


__________________
Being blunt and having fun
Straight up INTJ
mcgyvr is offline   Reply With Quote
Old 10/14/2019, 04:11 PM   #7
bertoni
RC Mod
 
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,120
The sediment filter should be first, then. If the filters are chosen properly, the carbon filter will be a finer mesh than the sediment filter, and it should go second. I might ask about a finer carbon phase if the sediment filter at 5 microns works. Do you mean that you have two sediment filters? If so, the 10 micron should be first.


__________________
Jonathan Bertoni
bertoni is offline   Reply With Quote
Old 10/14/2019, 06:53 PM   #8
loudell
Registered Member
 
Join Date: May 2003
Posts: 367
Yes. I have a 10 micron sediment cartridge which I will use first. Then the 5 micron carbon cartridge. then the RO and last the de-ionization. Is there any advantage to ending with another carbon after the de ionization or is that redundant?


loudell is offline   Reply With Quote
Old 10/14/2019, 07:02 PM   #9
bertoni
RC Mod
 
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,120
The carbon phase after DI is said to improve the taste of water for drinking, although I don't know why. For a reef tank, it's not useful in general.


__________________
Jonathan Bertoni
bertoni is offline   Reply With Quote
Old 11/08/2019, 09:20 PM   #10
loudell
Registered Member
 
Join Date: May 2003
Posts: 367
Would a carbon phase after the DI increase the TDS/Conductivity?


loudell is offline   Reply With Quote
Old 11/08/2019, 11:15 PM   #11
bertoni
RC Mod
 
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,120
Some, but maybe not measurably with hobbyist equipment. I don't know how much would leach from activated carbon, but it'd be greater than zero. If the carbon is of good quality, nothing dangerous would make it into the water, though.


__________________
Jonathan Bertoni
bertoni is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -6. The time now is 04:29 AM.


TapaTalk Enabled

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2019 Axivo Inc.
Use of this web site is subject to the terms and conditions described in the user agreement.
Reef CentralTM Reef Central, LLC. Copyright 1999-2014
User Alert System provided by Advanced User Tagging v3.3.0 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.