Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater & Reef - Getting Started
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 12-18-2007, 01:18 PM   #1
Aquarium Advice Regular
 
Join Date: Mar 2006
Posts: 83
Removed all Nitrate. Controled by O2.

I found this by luck. I had a tank with Nitrates (FOWLR). I have hungry fish. And of course I had nitrates as a result.

I have few fish but I learned that when my water level is high there is little room for air at the top between the glass and water line reducing the O2 (oxygen) in the water (was my guess). Now this can't be good but the fish don't seem to mind. I keep the light on for 12 hours a day and algae grows so that might be making O2. The tank is almost completely sealed with the exception that the filters hang off the back and are exposed to some air. No bubblers, no protien skimmer. I have gone almost 2 years now with no NO3 (nitrate) unless my water level drops and I get lots of splashing water and fresh air at the top which them my nitrates start showing up. Then I fill it back up to the rim and seal it off and NO3 drops to 0 again.

At least 25% of the tank is all Tuffa rock.

I read how bacteria deep in side if live rock starves for O2 and when no oxygen is available it will take the O2 (oxygen) from NO3 (nitrate) turning it to NO (nitrogen).

My other guess is that low O2 might be stoping the breakdown of waste in to ammonia and it might not have anything to do with NO3 reduction. Live rock reduces a small amount of NO3 normally. Maybe I am slowing down the Ammonia build up or both. The crabs eat the algae so that gets recycled back in to the water as fish/crab waste.

I don't claim to be an aquarium expert at all, just sharing what I think is happening. Please comment your thoughts. Thank you.
__________________

__________________
litebrite is offline   Reply With Quote
Old 12-18-2007, 01:56 PM   #2
AA Team Emeritus
 
cmor1701d's Avatar


 
Join Date: Feb 2003
Location: Belle Mead, NJ
Posts: 7,814
And your pH is reading....?
__________________

cmor1701d is offline   Reply With Quote
Old 12-18-2007, 02:02 PM   #3
Aquarium Advice Regular
 
Join Date: Mar 2006
Posts: 83
PH is 8.3. Hardness is about 220 a bit high (guessing from the Tuffa rock).
__________________
litebrite is offline   Reply With Quote
Old 12-18-2007, 04:48 PM   #4
Aquarium Advice Addict
 
Join Date: Aug 2006
Location: not here anymore
Posts: 5,338
Re: Removed all Nitrate. Controled by O2.

Quote:
Originally Posted by litebrite
I have few fish but I learned that when my water level is high there is little room for air at the top between the glass and water line reducing the O2 (oxygen) in the water (was my guess). Now this can't be good but the fish don't seem to mind. I keep the light on for 12 hours a day and algae grows so that might be making O2. The tank is almost completely sealed with the exception that the filters hang off the back and are exposed to some air. ...
Maybe I'm missing something, but I don't really think where your waterline is really matters. You say there's "less room" for air, but there's still the same surface area of water exposed to air... whether the tank is at the rim, or it's half full. "Almost completely sealed" means not sealed. It either is or isn't. If air can get in around your HOB equipment, then it's there - regardless of your water level. If your pH level is at 8.3, then you don't have an issue with lack of oxygen.

Not sure how big of a tank you're talking about here, and not sure how much water your letting evaporate before you top it back off again - but just plain dilution might explain what you're seeing. If you're not talking about a lot of nitrates to start with, and you're replacing a LOT of water, then you might just be dropping the nitrate level below the detectable level of your test kit.
__________________
Kurt_Nelson is offline   Reply With Quote
Old 12-18-2007, 08:50 PM   #5
SW REEF 18+ YEARS
Community Admin
 
melosu58's Avatar



Tank of the Month Award
 
Join Date: Oct 2004
Location: Virginia
Posts: 38,244
Re: Removed all Nitrate. Controled by O2.

Quote:
Originally Posted by Kurt_Nelson
Maybe I'm missing something, but I don't really think where your waterline is really matters.
Kurt is correct. It makes no difference where your water line. Aeration is obtained by surface aggitation. Hopefully you dont have glass hoods on top. I see where you said it is sealed. Have a PH pointed to the top and create a good surface aggitation as this will put the needed oxygen in the tank. Any glass tops will hinder the process.
__________________

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
Reply

Tags
led, nitrate

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
Should it be removed? spence0416 Saltwater & Reef - Getting Started 8 07-05-2004 10:39 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 11:16 AM.


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