I actually have to do biweekly water changes to get some nutrients in the system now I know there are some there because the corals are happy but long term I need moreHa! Could definitely be a ‘ mood swing’.
Water changes certainly have an affect no doubt. I had taken the wc into account previously and was dosing regular amount on wc days and was only seeing a 0.3 ish rise in alk which would settle after 24 hours.
it certainly is quite the balancing act Ha! It is one I enjoy though, it’s very fascinating.