Soooo not sure why I’m chiming in on this thread... BUT now that I’m here and I got the headache from reading all this I can’t help myself...I wonder if the water that houses captive bred angels and bosemanis that are then distributed to pet stores differs much. That I’d like know. If it does I might consider giving up the hobby
Most fish breeders keep fish in water very similar to their natural habitat otherwise they won’t typically breed. Thus the water does vary greatly from breed to breed. Most fish stores have RO water systems to provide water to their tanks and most fish stores have filter systems connecting groups of tanks. Thus stores must use water that will generally keep most fish alive and not too stressed even if it isnt perfect. RO water is truly neutral and meets this requirement, that’s why they use it. Some fish still die at the store from water stress though since this doesn’t match the water they where bred in. That is also why most fish, once brought home and placed in great conditions, get healthier/brighter/etc. So in conclusion, the water at stores vs the breeders water for each species is very different.
I’m new to the hobby and know this... I know to research compatibility and water needs... I may not have gotten it all perfect but I listen to those who know more than I and I try to correct mistakes when able.