For the 1 millionth time, the only way to get more CO2 in a tank is to add more CO2. You cannot add CO2 by changing the KH. It's impossible
Unless there are tiny CO2 cylinders hidden in the gravel, no gravel can increase CO2 and it's a waste of time to even consider it.
In low tech tanks soil/organic substrate is often used which is not only high in nutrition and harbors bacteria which excrete CO2 as a natural byproduct of their respiration.
Cheers,
Unless there are tiny CO2 cylinders hidden in the gravel, no gravel can increase CO2 and it's a waste of time to even consider it.
In low tech tanks soil/organic substrate is often used which is not only high in nutrition and harbors bacteria which excrete CO2 as a natural byproduct of their respiration.
Cheers,