I don’t know the science but I have a whole house water softener and keep whatever I want. Ive had peacocks, frontosas, etc that all did great as well as a albino aro, dats, plecos, etc. If I really wanted hard tap, I can just run a hose from the garden spigot. Are you sure they are softening that as well?
this is the info I’m looking for. This seems to be as 2 sided as politics for some reason. I’ve heard the same. Buddy of mine, doesn’t house Africans because of water softener but he does everything else and never had problems. Others say it’s a delayed death trap. Appreciate your feedback and hope to get some others to chime in to give me confidence.