Ahh, then it makes sense you haven't had detectable ammonia yet, if the fish just went in 2 days ago. Sorry I missed that from your OP. You will have ammonia. Keep testing and stay up on water changes. Maybe they are just playing now, but they will be stressed soon.
I think that you can still see ammonium (what Prime changes the ammonia to) on your ammonia liquid test kit? I don't have prime so I've never tested this out myself. Hopefully others can chime in and correct me if I'm wrong on this but I don't think you need to wait 24 hours after adding it to test.
I think that you can still see ammonium (what Prime changes the ammonia to) on your ammonia liquid test kit? I don't have prime so I've never tested this out myself. Hopefully others can chime in and correct me if I'm wrong on this but I don't think you need to wait 24 hours after adding it to test.