What is KH/Alkalinity?

KH (sometimes called carbonate hardness or alkalinity) refers to the waters ability to resist changes in pH. Don’t worry too much about that. 

It depletes over time as things with a skeleton (like corals and invertebrates) use carbonate ions to build their skeletons as they grow.

How to dose

If your KH is lower than 8, you need to dose some KH solution to bring it back into range. You can’t raise KH back to its original value through water changes alone. 

Dosing KH is simple!

Begin by adding KH buffer every day - we can help you decide on the daily dose. It is very important that KH stays as stable as possible, so a dosing pump will help with this. 

If the KH is falling, up your daily dose. If it is rising, then lower the daily dose.

It's best that KH stays as stable as possible - it going in in one go every day can be quite a big jump. For this reason, we like our daily dose to be split into many doses through the day using a dosing pump.