Do I Need Nitrogen? - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 04-07-2012, 06:14 PM Thread Starter
Algae Grower
Join Date: Aug 2011
Location: Las Vegas
Posts: 19
Do I Need Nitrogen?

I have a 7.9 Gallon Fluval Ebi with approximately 20 Cherry and Tiger shrimp in it and heavily planted. It is planted enough to fill much of the tank but not enough to eliminate nitrates. I want good plant growth so I can replant stems and fill the rest of the tank but I do not want to be trimming everyday. I dose with Flourish, Flourish Excel, and on occasion Flourish Iron, Phosphorus, and potassium. I never dose with Flourish Nitrogen as I do not want high nitrates to affect my breeding shrimp. My java fern has looked a little rugged lately and the plants haven't been growing as thick. I know nitrogen will assist but do I get enough already by feeding my shrimp? Is Flourish Nitrogen even necessary due to my feeding the shrimp and how much does it affect nitrate levels?
Tien23 is offline  
Sponsored Links
post #2 of 6 (permalink) Old 04-07-2012, 06:48 PM
Planted Tank Guru
acitydweller's Avatar
Join Date: Dec 2011
Location: New York
Posts: 7,695
What's your WC schedule? all that dosing can actually be detrimental without wc's

Also did you start dosing because you werent getting any growth?

"I am Groot", the faithful protector
acitydweller is offline  
post #3 of 6 (permalink) Old 04-07-2012, 08:07 PM Thread Starter
Algae Grower
Join Date: Aug 2011
Location: Las Vegas
Posts: 19
I don't keep to a hard schedule. I just monitor my nitrates and change water as needed. If my nitrates are at 10ppm for example, is there any point in dosing nitrogen. I don't think there is but I was just curious if the benefit would be good to the plants w/o harming the shrimp.
Tien23 is offline  
post #4 of 6 (permalink) Old 04-07-2012, 10:43 PM
Planted Tank Guru
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 21,015
If you have calibrated your nitrate test kit, then 10 ppm is enough, assuming you don't have high light. But, if you haven't calibrated your nitrate test kit, "10ppm" could be nearly zero or nearly 50 ppm.

Hoppy is offline  
post #5 of 6 (permalink) Old 04-09-2012, 05:35 AM
Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Posts: 11,721
Nitrogen from fish (or shrimp) food is a fine source for the plants. I also moderate the amount of KNO3 based on the amount of NO3 in the tank. Most tanks need only a little bit to keep them in a reasonable range. Means the plants are pretty much using up the fish food source and need just that little bit more.
Fish food also contains phosphorus, and I dose KH2PO4 in a similar manner: If the NO3 level dictates little or no dosing, then the KH2PO4 dose is similarly adjusted.
Diana is offline  
post #6 of 6 (permalink) Old 04-09-2012, 06:24 AM
Planted Member
m8e's Avatar
Join Date: Oct 2009
Location: Sweden
Posts: 201
Do you know how much phosphorus there is in normal flake food? If i get enough nitrogen from the flakes can i assume that I also get enough phosphorus?
m8e is offline  

flourish, nitrates, nitrogen, shrimp

Quick Reply

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome