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 04-10-2006, 02:49 PM   #1
Aquarium Advice FINatic
 
Join Date: Mar 2006
Location: Nebraska
Posts: 670
Nitrate drop?

I added a few pounds of cured LR on Saturday, to my 75g that's in its first cycle (in the nitrite spike right now).

I'm getting an expected ammonia bump from die-off (up from 0.0 to 0.25).

I top-off with about 5g of pre-prepared SW today from evaporation, about 2 hours ago. I used Tap Water Conditioner from Aquarium Pharmacuticals as directed (as I always have).

I just did a nitrite and nitrate check - nitrites are still high, around 10ppm, but nitrates, which have been between 10 and 20 for a few weeks, is at zero! I've rinsed the test tube several times, thoroughly, and retested 3 times now, and nitrate is still at zero.

I thought to eliminate nitrate it took a massive water change. Is it possible the tap water treatment did this? Or is there a chance the cured live rock is doing something with it?
__________________

__________________
Scoot is offline   Reply With Quote
Old 04-10-2006, 02:58 PM   #2
Aquarium Advice Addict
 
Join Date: May 2005
Location: Piedmont, NC
Posts: 4,580
First thing that caught my eye was.
Quote:
I top-off with about 5g of pre-prepared SW today from evaporation
Use only FW for top offs. Using SW will increase the salinity in your tank to a unsafe level.

Any chance the earlier NO3 test where done wrong? You are correct in that NO3 will not just disappear like that without a WC. I have seen weirder things happen though. I would guess it is probably a issue with the test. What kind of test is it?
__________________

__________________
*The fact that no one understands you doesn't make you an artist.
*If guns kill people...Spoons make Michael Moore fat.
Brenden is offline   Reply With Quote
Old 04-10-2006, 03:25 PM   #3
Aquarium Advice FINatic
 
Join Date: Mar 2006
Location: Nebraska
Posts: 670
SG was okay before (and is okay now) - lots of spray and salt creep, I'm losing some salt from that. The top of the tank isn't clean enough for me to be comfortable to just push the salt back in.

I've pulled a little water out too, for acclimating my fish from this tank into the QT tank, and from vacuuming some debris.

So this wasn't just replacing evaporation (I shouldn't have said "topped off" I guess). More replacement I guess than anything.

I've tested Nitrates every other day for a month, they were all consistent until today, I'm pretty confident I've been doing it right (been testing inground pool water for a few years with the same methods). Before today they were creeping up into the orange-ish 20ppm range. Today, bright yellow, pretty clearly at zero (although its hard to tell between 0 and 5 on this chart).

The test kit is also Aquarium Pharmacuticals.


(Later update)

About a half hour after my last test, the colors on the test have crept up into the 10-20 range, but this usually happened in the first 5 minutes. Maybe my reagents are bad...
__________________
Scoot is offline   Reply With Quote
Old 04-10-2006, 04:59 PM   #4
AA Team Emeritus
 
Join Date: Sep 2005
Location: VA
Posts: 3,391
Send a message via Yahoo to tecwzrd
Did you mix the #2 bottle for 30 seconds before adding? Could have missed a drop or lost count in adding drops. I’ve gotten 0-5 ppm readings from that test for the last 6 months. Confirmed it with a no3 Salifert test as well.

AP tests expire also (as do most tests) so if it’s old it could be less accurate. The readings usually do only take 5 minutes but will also gradually darken with time. You can also “cut” the reading by using half the water, adding the same amount of drops and dividing that reading if half although it’s slightly less accurate. I only do that when the color chart is hard to tell between two different readings.
__________________
-Micah-

If you haven't figured it out yet I like to BOLD links :P

Vote for AA at Aqua Rank
tecwzrd is offline   Reply With Quote
Old 04-10-2006, 05:03 PM   #5
AA Team Emeritus
 
cmor1701d's Avatar


 
Join Date: Feb 2003
Location: Belle Mead, NJ
Posts: 7,814
The test are meant to be read at a specific time after the reagent is added. This is usually 2-5 minutes. Any reading after a half hour should be discarded. I prefer the Salifert test kits due to the sharp color change for most of the tests. It makes it easy to get a precise reading.

Are you testing the salinity or SG of your tank? You don't usually lose enough salt to salt-creep to make a difference if you are doing PWCs. A good quality hydrometer or refractometer is essential in this hobby.
cmor1701d is offline   Reply With Quote
Old 04-10-2006, 06:08 PM   #6
Aquarium Advice Apprentice
 
Join Date: Jul 2004
Location: Baltimore, MD, USA
Posts: 37
Quote:
Originally Posted by cmor1701d
Are you testing the salinity or SG of your tank? You don't usually lose enough salt to salt-creep to make a difference if you are doing PWCs. A good quality hydrometer or refractometer is essential in this hobby.
Can you recommend one? I have an OLD Deep Six Hydrometer and I'm just not sure it's giving me accurate readings. Is this one or the Instant Ocean Hydrometer any good? Or do I really need a refractometer to get accurate readings?

Thanks,
Jeff
__________________
jhoelter is offline   Reply With Quote
Old 04-10-2006, 06:34 PM   #7
Aquarium Advice Addict
 
Join Date: May 2005
Location: Piedmont, NC
Posts: 4,580
I would get a refractometer. Even the "cheap" ones are good. Check liveaquaria, marinedepot, and fishsupply (.com) for sales. Then check ebay.
__________________
*The fact that no one understands you doesn't make you an artist.
*If guns kill people...Spoons make Michael Moore fat.
Brenden is offline   Reply With Quote
Old 04-10-2006, 07:06 PM   #8
Aquarium Advice FINatic
 
Join Date: Mar 2006
Location: Nebraska
Posts: 670
Yeah, regular SG, pH, Ammonia, Nitrite, and Nitrate tests.

Like I said, I re-tested 2 more times, same result each time. Even tried a different test tube in case something was fouling the test.

Checking at exactly 5 minutes. The test I have definately darkens (and is now reading much much darker).

I think I'm going to pick up a new test kit for Nitrate at least and try again.
__________________
180G build thread

180G All-glass with dual megaflows in a custom stand
AquaC EV-180 skimmer
250 pounds LR
160 pounds aragonite
Custom acrylic sump from GlassCages.com
2xPCX-40 return pumps
2x250MH 14K, 2x175MH 14K - PFO lighting, 2x65W PC
No-name 36W UV
Water General 125GPH RO/DI
Filstar XP3
Scoot is offline   Reply With Quote
Old 04-10-2006, 09:10 PM   #9
AA Team Emeritus
 
cmor1701d's Avatar


 
Join Date: Feb 2003
Location: Belle Mead, NJ
Posts: 7,814
Quote:
I would get a refractometer. Even the "cheap" ones are good. Check liveaquaria, marinedepot, and fishsupply (.com) for sales. Then check ebay.
Same advice here. I like the Salifert tests although the NO3 test does not have the instant color change I love about most of the others they make. Still, I trust the reading I get from Salifert.
cmor1701d is offline   Reply With Quote
Old 04-11-2006, 09:10 PM   #10
Aquarium Advice FINatic
 
Join Date: Mar 2006
Location: Nebraska
Posts: 670
Got a new test (same brand, AP), but I'm back to reading around 10ppm Nitrate. Ammonia still zero, Nitrits hovering around 10ppm, but declining a tiny bit.
__________________

__________________
180G build thread

180G All-glass with dual megaflows in a custom stand
AquaC EV-180 skimmer
250 pounds LR
160 pounds aragonite
Custom acrylic sump from GlassCages.com
2xPCX-40 return pumps
2x250MH 14K, 2x175MH 14K - PFO lighting, 2x65W PC
No-name 36W UV
Water General 125GPH RO/DI
Filstar XP3
Scoot is offline   Reply With Quote
Reply

Tags
drop, 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
PH drop cobb12 DIY Projects 4 08-03-2008 01:47 AM
Nitrate-Nitrogen or Total Nitrate johnkristie Saltwater Reef Aquaria 5 06-11-2008 10:06 PM
nitrate level that will not drop darrin34 Cichlid Discussion 10 04-18-2007 09:45 PM
Why did my PH drop ? iskatefast Freshwater & Brackish - General Discussion 8 11-25-2003 11:56 PM
ph drop simon sid james Saltwater Fish Only & FOWLR 5 08-23-2003 06:44 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 06:05 PM.


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