How to raise Alkalinity?

In the short term adding a buffer will raise your alkalinity and in the longer term using a salt with a naturally higher buffering capacity like Tropic Marin may also help too. However, I try to stay away from dkH buffers as most people tend to use it too aggressively and end up making changes in the water chemistry in their tanks too quickly (in my opinion). I generally like to a change in the water chemistry happen very slowly over time. Usually a tank that has a lower dkH than desired took some time to get down there, it usually didn’t happen overnight. Conversely, it’s also not optimum to have it raised to the desired level over night. For a permanent fix, I dose my tank with TM Bio-Calcium which will very slowly, over time, raise the dkH to the desired level which prevents pH swings in the long term.
 
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