wow, Jim said it. Although we seem to have only 45" of fish, it is a bit off. Fenner, as many experts will reccomend that you figure the Adult size of the fish(in sw they do NOT grow to fit your tank, only) now, I count 44" in 3 of those fish alone. Please do some more research and work to accomidate those fishes.
NOw for the Q at hand, I cant say anything Bang Guy has not said, except that the PH level definitely did not help> and I am glad to hear about your going to a larger tank, it will be easier , AS well I am even more pleased to hear that you are not giving up, but moving on and learning.
GOOD LUCK and give us some pics along the ways, WE DO LOVE THEM.