fwiw coraline is a huge consumer of cal and alk that is often overlooked , alot of reefers think they are getting no growth yet their calcium and alk is being depleted because well......it is , coraline uses as much or in some cases more than hard corals do
after a while you'll find that alk consumption doesnt happen in the evening ( or at least very little ) as much as during daylight as daylight hours ph is higher and corals and other animals are photosynthesizing
