Drs1685
Community Member
Can someone tell me what the process or formula is for determining how much my calcium/alk levels will increase in a 10 gallon tank doing a 10 or 20% water change, for example if my dkh is 8 and my water change water is a 10dkh, what will my new dkh be after the water change? or with calcium say I'm at 400 and my new water is 440 how much will my calcium increase doing a 10 percent change?
