@GHOSTLY Rule #1 dont do what other people do find the method that works for u u cant go off of what other people are doing no two tanks have the same uptake...
This will be a downhill battle until you figure out the tanks daily nutrient consumption
Then you have to ask yourself am I dosing to replace what I lost
Is it detrimental to coral health to replace 35% water volume every 2 days
Am I replenishing my trace minerals onto pof keeping alk cal and mag stable
May I ask you the size of your system?
What's your current daily nutrient uptake?
What method of dosing are u currently using?
Are you using aminos?
What is your stock level like
How much rodi is getting topped off daily into the system?
How much flow(52x watervolume turnover rate for acro dom but u want it controlable)
How pure is your rodi base water before you add salt?