Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater Fish Only & FOWLR
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 07-28-2003, 11:45 AM   #1
Aquarium Advice Apprentice
 
Join Date: Jul 2003
Location: Katy, TX
Posts: 26
Nitrates are up, any suggestions?

75G FOWLR, Yellow Tang, Purple Tang, Damsel and 3 inch Humu. Large wet/dry filter full of bio-balls, skimmer, 4 power heads.

Fighting the dreaded cyano-bacteria. Did a Nitrate test and voila, therein lies the culprit. Any suggestions on how to reduce the nitrates? I did a 30% water change three days ago. Water looks great, fish are great, just tired of stirring it up every day.
__________________

__________________
Nothing like this hobby to make you feel like a complete idiot.
Polecat is offline   Reply With Quote
Old 07-28-2003, 12:34 PM   #2
Aquarium Advice Apprentice
 
Join Date: Jul 2003
Location: Katy, TX
Posts: 26
Tested my water source, 0 Nitrates, so that's eliminated as the problem. I would think that with the limited livestock load in this tank that nitrates wouldn't be a problem. ???
__________________

__________________
Nothing like this hobby to make you feel like a complete idiot.
Polecat is offline   Reply With Quote
Old 07-28-2003, 12:35 PM   #3
steve-s
Guest
 
Posts: n/a
Welcome to AquariumAdvice.com

What exactly are the NO3 readings and what are you feeing daily? Any additional set up info would help.

You should also realize that 3 large(r) fish in a 75g tank is not very well advised. Even if you feel they are not cramped at this time they soon will be. Keep in mind that what goes into the fish must come out , the waste the animals produce is as much a contributor as the foods used.

I would also be wary of future aggression with the trigger and 2 tangs in a small environment.

Cheers
Steve
__________________
  Reply With Quote
Old 07-28-2003, 12:53 PM   #4
Aquarium Advice Apprentice
 
Join Date: Jul 2003
Location: Katy, TX
Posts: 26
Feeding twice a day with a custom pellet mix from the LFS, and supplementing with a bit of sushinori for the tangs.

This tank has been up and running for 5 years. The yellow tang I have had since the tank's inception, the purple for 3 years, the damsel about a year and the humu about 8 months. The wet/dry is rated for 225g. I have about 30 pounds of live rock and 1" base of crushed coral.

The humu is going to live elsewhere soon, I knew he was temporary when I got him. Once he's gone, I'd like to add some more live rock and a cleaning crew, i.e. snails and crabs.

The NO3 reading last night was 100ppm. 8O
__________________
Nothing like this hobby to make you feel like a complete idiot.
Polecat is offline   Reply With Quote
Old 07-28-2003, 01:06 PM   #5
Aquarium Advice Addict
 
Join Date: Apr 2003
Location: Beacon, New York
Posts: 1,386
Bioballs will be a definate source of Nitrates. I have them in my Wetdry and my Nitrates are always between 20-40. I am working on removing them now a couple at a time over the next few weeks. Also, pre-filters on your powerheads and pump (dont know if you have any) will also trap Nitrates as will as that Bio-Bail stuff.
__________________
Bill The Cat For President!
stresco is offline   Reply With Quote
Old 07-28-2003, 01:32 PM   #6
steve-s
Guest
 
Posts: n/a
The addition of the LR and "crew" will help, but as you say, "once the trigger is gone".

One of the reasons most dislike CC is it's a very efficient trap for foods and detritus which over time will accumulate and can (but not always) cause problems. 100 ppm nitrates are quite high even for a FOWLR. I would definately suggest a water change as well as having the LFS confirm the reading just to be safe. You never know with test kits, they are easily faulty or possibley out of date even if recently purchased. You could also test the source water for comparison.

I think until you are able to find the new home for the Humu, it would be prudent to feed the tank once a day, but leave the nori as is. The tangs do need the grazing foods. Even though you may not be overfeeding to any real degree, the wastes the fish are putting out is part of the problem.

How long ago did you start noticing the increase in the NO3 vs any possible changes you made in the tank?

Cheers
Steve
__________________
  Reply With Quote
Old 07-28-2003, 01:44 PM   #7
Aquarium Advice Apprentice
 
Join Date: Jul 2003
Location: Katy, TX
Posts: 26
My test kit may very well be out of date, but even if it is off, the cyano is a sign that the nitrates are high. I'll replace the test kit, as well as get an independent reading from a friend.

If the CC is a problem, what is the solution, replacing it with sand? Wouldn't that be doing more harm than good? Aren't there benefical creatures in the substrate?

If sand is the way to go, how do I go about replacing the CC with sand? AND, what type of sand do I go with? Live sand is out of the question $$ wise right now.

Thanks for your help.
__________________
Nothing like this hobby to make you feel like a complete idiot.
Polecat is offline   Reply With Quote
Old 07-28-2003, 02:16 PM   #8
steve-s
Guest
 
Posts: n/a
If you feel the CC is the culprit, it is relatively easy to swap. You can determine if it's part of the problem by syphoning some out or taking a net and scooping some from the bottom area's. If quite black, then I would say yes. Keep in mind that even sand will accumulate detritus but to a much less degree. Sand also has much more "surface" area for bacterial colonization. My tank has only 1Ĺ-2" of sand and still allows for proper nitification.

I recently did the same thing for the same reason back in December. After 5ish years with the CC, I decided it was time to go. The nitrates in my sytem were no where as bad (10ppm) but after the swap, they have never gotten above 5ppm. My system is not what you would call "typical" and relies heavily on LR and animals to keep things in line.

There are basically two schools of thought on this one. All at once or in stages.

I chose to do it in stages over about 6 weeks. Using a small 1" flexible hose, I syphoned out the CC . I visually sectioned the tank and removed 1/3rd of the CC at a time (every 2 wks) and added a plain oolitic sugar sand. This allows for the fauna to migrate over to the new sand as well as not impacting the biological filter base the bacteria provide. It was done with little effort and diruption to my tank (which is a full reef) and there were no loses or dreaded algae blooms.

>>Here<< is an interesting article that should also help.

Cheers
Steve
__________________
  Reply With Quote
Reply

Tags
nitrates, suggestions

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
Nitrates brianf40us Saltwater & Reef - Getting Started 11 12-08-2008 06:59 AM
Nitrates squeekness Freshwater & Brackish - Unhealthy Fish 31 01-26-2007 06:33 PM
Nitrates matman Saltwater & Reef - Getting Started 10 03-11-2005 09:31 PM
Nitrates! lando Saltwater & Reef - Getting Started 1 08-15-2004 03:46 PM
High Nitrates And the Best way to lower Nitrates Freshwater & Brackish - General Discussion 5 11-29-2003 07:40 AM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 07:04 PM.


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