Curious about others experience with this. I am currently manually dosing 2 part and considering either a doser or Kalk in ATO. Any feedback on thoughts of this approach or experience would be appreciated.
IMHO, it is a good approach and your corals will love you for it, but be mindful that your ATOs pump lifespan will greatly be reduced and not to mention all cloudy/milky residue in, and around it. Due to this, I personally have a separate dosing channel performing this duty.
I like to dose kalk precisely to keep levels stable. In an ato your daily evaporation changes, so you kalk dosage would change. I prefer an ecotech versa and an avast kalk stirrer to dose the same amount daily.