Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater Reef Aquaria
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 01-19-2011, 04:44 PM   #1
Aquarium Advice Apprentice
 
Join Date: Feb 2010
Posts: 46
RO water BAD for SW fish? wow...

I was at home depot today getting plumbing pieces for my newest project when i overheard someone asking an employee about RO units. he claimed to have the same one on the rack at his house and he uses it for his SW fish tank. the employee then began to reprimand (sp?) him for using RO saying that fish will die within a matter of days in RO because natural water has "stuff" in it that fish need that RO removes. Then the employee went on to say how he had a 400gal reef tank so he knows what hes talking about. i later caught a piece of the convo where the employee mentioned his tank randomly crashed one week. you would think employees would know what they are talking about right? that why i never ask for help at stores.
__________________

__________________
mistermismatch is offline   Reply With Quote
Old 01-19-2011, 04:49 PM   #2
Sliced Bread
 
neilanh's Avatar


 
Join Date: Dec 2006
Location: Northern Virginia
Posts: 8,482
There's some truth to this in a FW tank. I dunno about fish dieing because of it, but it's not preferred to use RO or DI water in a freshwater aquarium.

The difference in SW is the salt mix is supplying the elements we want into the water, without all the elements we don't want. The RO/DI process basically gives us a clean slate of water to mix in what we want, which is accounted for in the salt mixes.
__________________

__________________
~Neilan
In the DC Metro Area? Check out GWAPA and WAMAS
neilanh is offline   Reply With Quote
Old 01-19-2011, 05:43 PM   #3
Aquarium Advice Apprentice
 
Join Date: Feb 2010
Posts: 46
i told him something similar^^
__________________
mistermismatch is offline   Reply With Quote
Old 01-22-2011, 11:24 AM   #4
Aquarium Advice Freak
 
rush's Avatar
 
Join Date: Nov 2010
Location: Ottawa, Canada
Posts: 349
The best mixture is 80% RODI and 20% treated tap water. This will give the elements needed from the fresh water along with the salt mixture elements will give you the best water for your fish. I have never heard of fish dying do to RODI water in SW set up, it would most likely be other parameters within the water. It is true however for FW, but it is still a good idea to do a 50/50 mix.
__________________
rush is offline   Reply With Quote
Old 01-25-2011, 08:53 PM   #5
Aquarium Advice FINatic
 
adeebm's Avatar

POTM Champion
 
Join Date: Jun 2010
Location: Woodbury, MN
Posts: 909
Quote:
Originally Posted by rush View Post
The best mixture is 80% RODI and 20% treated tap water. This will give the elements needed from the fresh water along with the salt mixture elements will give you the best water for your fish. I have never heard of fish dying do to RODI water in SW set up, it would most likely be other parameters within the water. It is true however for FW, but it is still a good idea to do a 50/50 mix.
I don't see how 20% tap water for SW has any benefits. All the minerals needed should be in the salt mix.

As for FW, pure RO is a killer because of the lack of minerals. A 50:50 mix can be used like you said if you need to lower your TDS for whatever reason.

--Adeeb
__________________
My tanks: 46gal Amazon - 55gal Crabitat - 28gal SW - 29g Vampire Terrarium
My Fiddler Crab Site
Shave the Whales!
adeebm is offline   Reply With Quote
Old 01-25-2011, 08:58 PM   #6
Aquarium Advice Addict
 
Join Date: Aug 2006
Location: not here anymore
Posts: 5,338
Quote:
Originally Posted by rush View Post
The best mixture is 80% RODI and 20% treated tap water. This will give the elements needed from the fresh water along with the salt mixture elements will give you the best water for your fish....
Huh?

What elements in tap water are needed, that aren't supplied by the salt mix?
__________________
Kurt_Nelson is offline   Reply With Quote
Old 01-25-2011, 09:06 PM   #7
SW REEF 18+ YEARS
Community Admin
 
melosu58's Avatar



Tank of the Month Award
 
Join Date: Oct 2004
Location: Virginia
Posts: 38,249
I work for a large water municipality and I can guarantee you there is nothing good in tap water for a reef. The compounds added are good for humans but bad for our reefs. Things like Nitrates, phosphates, silicates, flouride, chlorine, Ammonia and various heavy metals. I recommend 100% RO/DI. At least that`s the only thing that`s in my tank. Do me a favor and dont rely on your Home Depot salesman for aquarium advice. Stick to your LFS and people on this site.
__________________

SITE ADMINISTRATOR

You can view many of my fish and corals in my photo albums in my profile.

View my tank


AA Community Rules|AA TOS

Forums 101 - posting, accounts, basics
melosu58 is offline   Reply With Quote
Old 01-25-2011, 09:18 PM   #8
Aquarium Advice FINatic
 
Join Date: Jan 2011
Location: ontario
Posts: 771
Quote:
Originally Posted by mistermismatch
i told him something similar^^
Well said
__________________
Sqasnatch is offline   Reply With Quote
Old 01-25-2011, 09:42 PM   #9
Aquarium Advice FINatic
 
uscamaro's Avatar
 
Join Date: Jan 2008
Location: Las Vegas
Posts: 861
Quote:
Originally Posted by rush View Post
The best mixture is 80% RODI and 20% treated tap water. This will give the elements needed from the fresh water along with the salt mixture elements will give you the best water for your fish. I have never heard of fish dying do to RODI water in SW set up, it would most likely be other parameters within the water. It is true however for FW, but it is still a good idea to do a 50/50 mix.

My LFS told me the water in Vegas is very hard, which is a good thing when starting a SW tank, since I won't need any buffers. In my startup, I didn't have any problems and everyone is healthy. Although now I have RO/DI water because I want corals!
__________________
-Patrick

uscamaro is offline   Reply With Quote
Old 01-26-2011, 12:30 AM   #10
Aquarium Advice Freak
 
rush's Avatar
 
Join Date: Nov 2010
Location: Ottawa, Canada
Posts: 349
Quote:
Originally Posted by uscamaro View Post
My LFS told me the water in Vegas is very hard, which is a good thing when starting a SW tank, since I won't need any buffers. In my startup, I didn't have any problems and everyone is healthy. Although now I have RO/DI water because I want corals!

I was told something similar to that from my LFS here. That is why i relayed the same info. I started all of my tanks out that way 80% rodi and 20% treated tap water. Anyways after reading more about it after the responses I got on here I would suggest only RODI unless your tap water tests well on your TDS meter.
__________________

__________________
120 Gallon Reef

***Pics now on profile***
rush is offline   Reply With Quote
Reply

Tags
ro water

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
bad water and not well fish peaceablegarden Freshwater & Brackish - Unhealthy Fish 8 09-06-2008 04:46 PM
wow, that was almost bad WaterPond Freshwater & Brackish - General Discussion 8 11-19-2006 12:13 AM
Wow, I have soft water. gfink Freshwater & Brackish - General Discussion 3 02-19-2005 01:33 AM
Wow, I feel really bad. illuminum Freshwater & Brackish - General Discussion 5 02-06-2004 09:30 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 06:55 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.