I now have some results of the amphipod test that I discussed the setup for in this post:
First column is the time in hours, the next 4 columns are the 4 treatments - Tank water with or without ammonia and with or without Prime, second to last column is the ammonia level at that time, last column is when and how much Prime was added.
| Time (hours) | Status of Amphipods | | | | Ammonia level | Prime added |
| 1 - Tank Water | 2 - TW+Amm | 3 - TW+Amm+Prime | 4 - TW+Prime | | |
| 0 | 2 swimming | 2 swimming | 2 swimming | 2 swimming | 0.55ppm NH3, 4ppm NH3+4. | +4x Prime |
| 6 | 2 swimming | 2 swimming | 2 swimming | 2 swimming | 1.6ppm NH3, 12ppm NH3+4. | +12x Prime
(16x total) |
| 7 | 2 swimming | 2 alive, not swimming | 2 alive, not swimmming | 2 swimming | | |
| 13 | 2 swimming | 1 alive not swimming, 1 dead | 2 alive, not swimmming | 2 swimming | | |
| 20 | 2 swimming | 1 alive not swimming, 1 dead | 2 dead | 2 swimming | | |
| 22 | 2 swimming | 2 dead | 2 dead | 2 swimming | | |
The clearly toxic effects began within an hour of moving to the second level of ammonia, so I did not go any higher.
The ammonia was clearly toxic with or without Prime added at 12x (for 12ppm ammonia). There was no detectable difference in the color of the seachem disks, or the time when the amphipods could no longer swim, or any significant difference in the time when they were dead.
In the treatments with ammonia, without Prime the two amphipods were dead at 13 and 22 hours. With Prime the amphipods were both dead at 20 hours.
The amphipods not exposed to ammonia (with or without Prime) were able to swim throughout the process and were fed to a grateful yellow watchman goby at the conclusion.
Pics at the conclusion of experiment.
(Seachem NH3 detecting disks Left to right: bottle 1- Tank Water, 2 TW + ammonia, 3 TW + ammonia + Prime, 4 TW + prime)
(left to right: bottle 1- Tank Water - swimming, 2 TW + ammonia - dead, 3 TW + ammonia + Prime - dead, 4 TW + prime - swimming)
Could the experiment be made more applicable and convincing with sensitive fish and a lower ammonia level? sure, but I have zero interest in doing that since it's clear to me that Prime doesn't detoxify ammonia and it would just end with dead fish.