Water changes

[Girish23]

Randy if you doseing only calcium magnesium and alk then do you change water. if you do what is the water changeing shedul of your tank and how much you change the water.

 

[Ewilson]

Following

 

[Randy Holmes-Farley Verified Community Expert]

I think that 10-30% monthly (however you want to split it up) is a fine plan for water changes. It may not maintain certain other things (such as iron) and so you may want to consider other dosing as well.

I discuss water changes here:

Water Changes in Reef Aquaria by Randy Holmes-Farley - Reefkeeping.com
http://reefkeeping.com/issues/2005-10/rhf/index.php