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View Full Version : Lethal levels

Drumachine09
03-09-2007, 03:45 AM
Does anyone know the lethal level of ammonia in ppm that would kill most fish?
cocoa_pleco
03-09-2007, 03:48 AM
9 or 10 i think. why do you wanna know this? lol
Drumachine09
03-09-2007, 03:49 AM
Well, i wanted to know what levels fish could tolerate while doing fishy cycling.
cocoa_pleco
03-09-2007, 04:05 AM
when i do fish cycling i just do a 30% water change each day, and all is good.
Lady Hobbs
03-09-2007, 10:48 AM
Any amount of ammonia or nitrites will kill fish over a long haul. In a pinch, they will do OK for a short time in ammonia levels under "maybe" .50 and nitrites around .50 and nitrates not over 30. But I would be very worried at that point. Often what they experience now effects them later. They may appear fine right now but will develop problems down the line.

Small water changes daily if you are cycling with fish anytime any levels get over what's listed above.
Drumachine09
03-10-2007, 12:33 AM
Im not doing fishy cycling. I met a cute girl at walmart (read the story in my blog) and she needed help setting up her tank and i decided against fishy cycling, but it would still be good to know. Thanks hobbs!