Im trying to set up a CRS tank and get it cycling but the one thing i dont get is buffering substrates. I only use RO water which is at 7.0 so the substrate im assuming lowers the water to 6.5? What happens when i do water changes? Wouldnt it shock my shrimp cause of the sudden increase in pH? ATM im keeping RCS at 7.0-.1 water with ada amazonia soil so im just a little confused how this buffering substrate works. Thanks for all the help in advance!