| kh
The way I understand kh, is its the balance for the ph. If the KH is 80 - 120, the ph is more stable if we get rain or any change. Also the kh feeds the biological filter. Kh was something I didn't use to check but after seeing how quickly a ph can crash, I check it when I check my amm, ph and nitrite.
I have a mature filter and would love to add additional space for oyster shells in the future but for right now when I do a 10% change, I check and if its low, I just add some bs. The pond and aquarium.
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