Lost 2 out of 12 the last few days. Don't know whats going on. PH is at 7.6 because of the amount of salt added along with RID ICK. Noticed a few of them had it. All of a sudden now their not very active, hunging the bottom, colors are pale to very dark stressed out colors. Nitrates are at .25ppm water temp at 86. Going to do another water change right now. This last batch of feeder guppies seems to have kicked their asses, any idea's?