I think it just depends on the goal of your tank. If you want to maximize coral growth and color then testing will be key imo. Dialing in the parameters you want will require testing and as coral rapidly grows more testing will be required as the base line consumption increases with growth.
I test my main tank once a week but my second tank I don’t do much testing because I’m not super concerned with coral growth in that tank.
I test my main tank once a week but my second tank I don’t do much testing because I’m not super concerned with coral growth in that tank.