Go Back   Aquarium Advice - Aquarium Forum Community > Freshwater > Freshwater & Brackish - General Discussion
Click Here to Login

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 02-11-2005, 03:16 PM   #1
Aquarium Advice Newbie
Join Date: Oct 2004
Location: UK
Posts: 6
Nitrate level - is this safe?

Having just completed a fishless cycle, I really want to get some fish but I've read varying opinions on reasonable nitrate levels, some say don't stock unless nitrate is <10ppm whereas others say up to 50ppm is still OK. My current reading is 25ppm and despite doing a 70% water change (after the ammonia and nitrite levels went to zero) followed by a 20% change 2 days later, the level remains unchanged and has in fact done so for the last week or so (it peaked at about 50 mid-way through the cycle)

So, can I start stocking?

spoogehead is offline   Reply With Quote
Old 02-11-2005, 03:33 PM   #2
Aquarium Advice Activist
Join Date: Jan 2005
Location: Dallas/Fort Worth, TX
Posts: 141
25 isn't "dangerous" but it's higher on the scale of "okay." I'd say you've fine to start stocking, just keep an eye on it. Of course low nitrate readings are the most desireable, but 25 isn't that bad.

10 gallon FW-2 zebra danios, 3 cory cats, 1 dwarf gourami, 1 baby rubbernose pleco
2.5 gallon FW-empty for now
Frank_the_Tank is offline   Reply With Quote
Old 02-11-2005, 03:41 PM   #3
Aquarium Advice Newbie
Join Date: Oct 2004
Location: UK
Posts: 6
Thanks for the info. Any ideas on the best way to reduce nitrate levels? Should I just do some small changes, say every other day? The tank is very lightly planted, perhaps adding a few more would do the trick. I also have a nitrate removing filter that i can add to my filtration unit, are these any good or have i wasted my money?
spoogehead is offline   Reply With Quote
Old 02-12-2005, 12:11 PM   #4
Aquarium Advice Freak
Join Date: Jan 2005
Location: Lubbock, TX
Posts: 396
Try adding some hornwort. They are a floating plant that sucks down nitrogenous wastes so that should help. I think they will grow like crazy with the nitrates that high but just prune them back every once in a while.
"great spirits have always encountered violent opposition from mediocre minds" - Albert Einstein
frog girl is offline   Reply With Quote
Old 02-13-2005, 11:24 AM   #5
AA Team Emeritus
TankGirl's Avatar
Join Date: May 2003
Location: Richmond VA
Posts: 8,974
You may find that you have nitrate in your tap water, and I don't think there is a thing wrong with 25ppm.
TankGirl is offline   Reply With Quote
Old 02-15-2005, 02:28 AM   #6
Aquarium Advice FINatic
Join Date: Sep 2004
Location: Corona Ca.
Posts: 515
I think Tank Girl is right. Take some of your tap water, let it sit over night, then test. My tap water has 40 PPM. It actually goes down some between water changes due to live plants in the tank. My fish seem to do ok at 40.
Doran Hayes
BASSNMAN is offline   Reply With Quote
Old 02-15-2005, 12:10 PM   #7
Aquarium Advice FINatic
ChileRelleno's Avatar
Join Date: Feb 2004
Location: Alabama,USA
Posts: 1,031
Its my understanding that NO3 levels don't become a major concern until atleast 50-80ppm, though most agree that 40ppm or less is ideal for FW and it can be lower depending on the type of fish/invertebrate.
Excessive NO3 can supply extra nitrogen which can contribute to algae blooms.
My 75gal consistently runs 40-60ppm NO3 (I don't worry about it, messy fish ), while my Bettas 10gal tanks run 10ppm NO3.

I would also make sure your not using a testkit that measures NO3-N (nitrate/nitrogen), as it will give readings 4.4x's less

If you ran the cycle and NH3 and NO2 have zero'd and NO3 has spiked, then your cycled... I would start adding fish

I am concerned for the security of our great Nation; not so much because of any threat from without, but because of the insidious forces working from within.
Douglas MacArthur

ChileRelleno is offline   Reply With Quote

level, nitrate, nitrate level, safe

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
nitrate level that will not drop darrin34 Cichlid Discussion 10 04-18-2007 08:45 PM
Nitrate level way above 100ppm! tshere Saltwater Fish Only & FOWLR 59 09-25-2006 10:17 AM
New tank -- is this Nitrate level possible? pinstripe Freshwater & Brackish - Getting Started 9 07-23-2005 02:56 PM
Nitrate level AirRazr Saltwater Reef Aquaria 2 10-05-2004 10:48 PM
What's an appropriate Nitrate level? johncake Freshwater & Brackish - General Discussion 7 08-20-2003 04:23 PM

» Photo Contest Winners

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 06:39 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.