Our fish tank was having an ammonia spike around 0.5 ppm and we checked on Google on how to get rid of it. People on forums were talking about Seachem Prime and we've read positive reviews about it. So we went to Petsmart, grabbed one and used it. After using 1 capful in our 32.5 gal, all the fish started acting strangely, then they were all swimming frantically and grasping for air. They started to jump out of the fish tank, it was actually scary. According to Seachem Prime instruction, it is safe to use even 5x the amount. 1 capful was for 50gal and we have 35gal, so even if it's only a little but more, it should be fine. But it seems like it was dangerously high and it instantly depleted all the oxygen in the water, suffocating all the fish. The product should at least have a warning about this. We were trying to save our fish and we ended up killing almost 80% of them. Really tragic and sad day.
