JuanTamad;1009334; said:Not likely.
They not only survive in hard water they also breed in it.
The only type of Angel I know that requires really soft water are wild caught Altums. Even that specie can be acclimated to hard water. Altums may not breed in hard water but they can be acclimated to it. I have six that i've kept for over three years now in Municipal water that some folks have considered to be too hard it might as well be solid rock.
I have a dozen pairs of domesticated angels breeding in the same municipal water.
Alright, lets figure it out.
Nitrate 20
total hardness 175 ppm
alkalinity 40 ppm
pH 6.8
temp 84 deg f
tankmates: Roseline sharks, loaches
diet: Offered flake, bloodworms