So I'm not completely new to the hobby but it's been a good 10 years since I last had fish. I also had amazing water quality so I never had to worry. I want to use my old 20 gallon high again. I'd like to do a planted community tank with a betta as the centerpiece. But I'm a little worried about my water the PH is fine but GH is 214.1 ppm and KH is 161.1. So any advice on what fish, plants or if I should even worry about it would be appreciated.