Editing Ammonia
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**0.200 to 0.499 (ppm) is perhaps tolerated for a day or two and will probably kill. | **0.200 to 0.499 (ppm) is perhaps tolerated for a day or two and will probably kill. | ||
**0.500+ (ppm) is deadly and will probably kill within a day. | **0.500+ (ppm) is deadly and will probably kill within a day. | ||
− | **Individual species of fish, amphibians, invertebrates etc. vary enormously on their tolerances of low levels of ammonia and the issue is made further complicated as young are far more susceptible to ammonia than older animals.<ref>US Environmental Protection Agency. Ambient Water Quality Criteria for Ammonia, (EPA 440/5-85-001) 2009. [http://water.epa.gov/scitech/swguidance/standards/criteria/aqlife/pollutants/ammonia/ammonia_index.cfm]</ref> <ref>Glodek, Garrett S. "Ammonia in the Closed System Aquarium," FAMA, June 1991.</ref> | + | **Individual species of fish, amphibians, invertebrates etc. vary enormously on their tolerances of low levels of ammonia and the issue is made further complicated as young are far more susceptible to ammonia than older animals.<ref>US Environmental Protection Agency. Ambient Water Quality Criteria for Ammonia, (EPA 440/5-85-001) 2009. [http://water.epa.gov/scitech/swguidance/standards/criteria/aqlife/pollutants/ammonia/ammonia_index.cfm]</ref> <ref>Glodek, Garrett S. "Ammonia in the Closed System Aquarium," [http://www.fishchannel.com/fama_portal.aspx FAMA], June 1991.</ref> |
**In nitrogen sensitive fish like Trout, ammonia is about 6x more toxic than [[nitrite]] and about 13,300x more toxic than [[nitrate]] <ref>[http://www.barrreport.com/showthread.php/2827-Barr-Report-Newsletter-Fish-Waste-and-Macrophytes?p=15248#post15248 Barr Report (subscription required)] - Fish Waste and Macrophytes paper page 9 - March 2007</ref> | **In nitrogen sensitive fish like Trout, ammonia is about 6x more toxic than [[nitrite]] and about 13,300x more toxic than [[nitrate]] <ref>[http://www.barrreport.com/showthread.php/2827-Barr-Report-Newsletter-Fish-Waste-and-Macrophytes?p=15248#post15248 Barr Report (subscription required)] - Fish Waste and Macrophytes paper page 9 - March 2007</ref> | ||