Hi, sorry for your loss.You did the correct way of acclimation as well as others hobbyist's suggestions here. Everyone here stated a different way of acclimation and it works for them. I never heard of anyone dumping livestock in without proper acclimation especially with such wide parameters. Only in the worse case scenaro, you need to get the livestock in clean water. The powder brown tang got stressed out by lower pH, co2 increased by the PBT and caused low pH while travelling home in the bag. I'm sure there was no ammonia present in his tank, except it was developing during the trip home. The high nitrate indicates his poor water management. By putting the airstone in the bag, you were trying to rid of the co2 and increase o2, good for you! But too late and too sad. 2 questions: I'm sure when you were picking out the PBT in the tank. Did it look healthy? Second: How long a trip did it took to take him home? I have had PBT in the past and they are my one of my favorites. One in a client's tank for more than 8 years to this day alive and well. When we first got him, he was near death with ick, but recovered. Regards Ken
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