No, I didn't med them! Lost another Cory this mornin. It was all my fault that this happend. I put them in and didnt think

shortly after I did a water change....because I tested the water for ammonia and it read at 1.0
PPM. I don't know why but I have Prime and could've added that until the next day for them to be not stressed then do a w/c!! I've been havin ammonia probs in that tank and it's been drivin me nuts!!!
It now reads:
Ammonia .25
NitrItes 0
NitrAtes 10
It doesn't matter how many w/c changes I do, it is always at .25!!!

Then goes up......

Finally added another bio-module pack to the filter a few days ago for more bacteria colonys to grow. The tank was overstocked but was waiting to move them over to the 55 gal. So that's prob why I was havin ammonia probs my established bacteria colony couldnt keep up. Workin on that now.....