Hello!! We have decided to upsize our tank. Upon doing some research on different stocking options, I noticed that some people mention the GH and KH in the water parameters. Some say it's super important, others less so. And I've found conflicting info on what those levels should be for the different species. I want to make sure all the fish we choose will be happy in the same water parameters. If anyone has more knowledge and experience I'd appreciate it!! list of the possible fish:
Harlequin rasbora
honey gourami
bristle nose pleco
angelfish(just 1!!)
cherry barbs
pristella tetras
Thanks!!