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Free Ammonia Calculator

* Special thanks to Boomer from www.reefcentral.com for his help.

This calculator estimates the concentration of free, or unionized, ammonia (NH3) in an aquarium given the total ammonia (NH3 + NH4) concentration. See my Nitrogen-Ion Conversion Chart for an explanation of the difference between NH and NH-N, but the short of it is that you should use "NH-N" as your Total Ammonia Type if your test kit measures Total Ammonia Nitrogen (TAN).

Total Ammonia Type:


Total Ammonia Measurement:
 

Salinity:
 

pH:
 pH Units

Temperature:
 



NH3 + NH4 Concentration:
 

NH3 Concentration:
 



Copyright © 2010-2018 Hamza Muhammad Arain.
For more information please contact me as "TheH" on www.reefcentral.com