Aquarium water RO water and tap water!
Helo guys! i need help with the water for my aquarium, i m quitw new to this hobby i started about a month and half ago.
my question is, is it normal that the RO water that i keep in a plastic container to mix with my tap water and to dechlorinate (ratio 4 RO :1 Tapwater) increase it's ph from 7 the first day to 8ph only 2 days later? is the container maybe contaminating the water?