Ammonia in my Water Change Container

underdasea

New member
Here's my dilemma.

After bleaching my water/salt mixing container, with the powerhead still in it, and rinsing it extremely well and running the powerhead through the rinse as well, I've somehow managed to find .50 ppm ammonia in my water change water.

The source water has been tested and is free of ammonia, and the only thing in the container aside from the salt and water is the powerhead and a floating thermometer - both of which were bleached and thoroughly rinsed. The last time I tested the parameters in the water change container (about 2 weeks ago), everything was fine (i.e. 0 ppm ammonia, nitrite, nitrate, and 8.3 pH).

Figuring that I didn't need to test my water change water for ammonia, nitrite, or nitrate, I drained 5 gallons from my 55 during my water change earlier. For some reason, I decided to test the water change waterand found the .50 ppm ammonia. Unfortunately I was stuck with having to add 3 gallons of the water with ammonia and 2 gallons of fresh RO/DI water to the tank because I didn't have any other saltwater mixed up. My suspicion is that my tank will accommodate the 3 gallons of .50 ppm water just based on the bacteria available. Am I correct in assuming that?

Also, does anyone have any idea how ammonia would be present in a thoroughly bleached and rinsed tub?

This is incredibly frustrating as I don't want to add bad water to the tank, but today I didn't have a choice. Any advice would be appreciated.
 
Actually, The dirty little secret is that the ammonia is in the salt itself. Your test kit (or you interpretation of it) is running a little high, most ammonia levels in freshly mixed synthetic seawater runs around 0.20 ppm. Still, I'm certain that's what you are seeing. Not all brands of salt have this trace of ammonia, and it is possible (since it is a trace contaminant) that the amount of amonia will vary between batches. I actually got an employee of a major salt manufacturer to admit this to me (verbally), and he implicated other companies as having this issue as well.


Jay
 
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