Go Back   Aquarium Advice - Aquarium Forum Community > General Aquarium Forums > General Hardware/Equipment Discussion

Join Aquarium Advice Today
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
Old 08-28-2016, 02:51 PM   #1
Aquarium Advice Activist
nwsharksfan's Avatar
Join Date: Mar 2012
Location: Seattle area
Posts: 153

I have an RODI unit that was producing 0-5 tds water. I changed the prefilters and its now up to 10-12 TDS. Is this still and acceptable range for a reef tank with hardy coral or should I be replacing the membrane?

nwsharksfan is offline   Reply With Quote
Old 08-28-2016, 03:32 PM   #2
Aquarium Advice Addict
coralbandit's Avatar

POTM Champion
Join Date: Apr 2015
Location: Saratoga,NY
Posts: 3,659
You need to be replacing your DI resin when it no longer works...
Depending on your source water level just the RO system with a good TFC membrane could still let some TDS through.
It is De Ionising resins that do the final job...

DI Resin - Bulk Reef Supply

coralbandit is offline   Reply With Quote
Old 08-28-2016, 04:50 PM   #3
Aquarium Advice FINatic
Mr tap water's Avatar

POTM Champion
Tank of the Month Award
Join Date: Aug 2013
Location: middlesex uk
Posts: 532
Before you change your DI resin try flushing it through for about 20 minutes and see were reading you get first.

Sent from my iPhone using Tapatalk
Mr tap water is offline   Reply With Quote


Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
RODI unit high TDS?? begginersluck Saltwater Reef Aquaria 2 04-01-2013 05:22 PM
TDS Reading in Tank, but Not From RODI Unit cashmoney6980 Saltwater & Reef - Getting Started 4 05-22-2012 08:01 PM
Freshwater RODI TDS bry1105 Freshwater & Brackish - General Discussion 6 11-11-2011 12:21 PM
TDS meter... TDS? stratmaster General Hardware/Equipment Discussion 2 09-25-2009 05:29 PM
TDS in....TDS out of RO well water for reef jackdp Saltwater Reef Aquaria 8 11-26-2006 09:59 AM

» Photo Contest Winners

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2012 Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 01:34 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.