Supplements!

[Bandsaw]

I agree with whatcaneyedo. What you need to add to your tank will depend on what you keep in it.

I have been down two roads on this one. The first road was using commercial supplements to maintain Calcium, Alkalinity and Magnesium and was left frustrated with the results. Even with using limewater. I finally made the investment in a Calcium Reactor and have never been happier. Like whatcaneyedo, I use limewater still as my top up water and add a homemade magnesium supplement when required.