I have a 2 year old 13.5 gallon with acans and hammers (all currently doing well) with no major issues. I do about 10-20% WC every week but I’ve been getting insane alkalinity numbers. I dose calcium and mag (currently at 440 and 1300) but I have never dosed alk because it’s always super high. I figured it could be my test kit but I took some water in to my LFS and they got the same reading I did. I’ve done two larger water changes the past weeks but I tested again today and it’s still sitting at 15. Any ideas as to what the is going on?
Thanks
Thanks