Drip acclimating has made acclimating sensitive fish much easier for me. I bought 6 a while ago from petsmart when they were a dollar. They drip acclimated slowly for around 4 hours when the water volume was tripled. Haven't lost one of them. I do the same for GBR's and angelfish. I know drip acclimation isn't something everyone wants to do, but it works well and it is cheap to make. Although, it would be nice to have the in tank drip acclimation, so then there isn't a temperature drop
. Also, adding a few drops of prime to the water during acclimation helps relieve some other stressors if the store doesn't add prime or something similar.