Hey! so I have two tanks that I'm starting. 1 20g and 1 like.....2.5 g I think.
they are 6 and 8 days old. I have two bettas in the 20g and I need to separate them until I get more, (starting a sorority) however the 2.5 tank's hardness is up to 60 (this is why they are in the same tank in the...