gh and kh range

Hi everyone! I am a member that just joined the Planted Tank forums. I am not new to the hobby of fish and shrimp keeping but I just had a few questions on this particular type of fish and my water parameters. I recently went to a LFS and purchased 4 Sundadanio axelrodi (did not do prior...

Hello I am worried pH of 7.8 is too high for my 30 gallon aquarium with 5 zebra danios, 6 peppered corydoras catfish, 12 neon tetras, and nerite, trumpet and ramshorn snails. I tested my tap and found that it is 7.8 as well. I tried using distilled water mixed with tap during 30% water changes...