What: "The buffer is like an alkalinity bank. If something in the tank is causing the water to go acidic (dead fish, detritus etc), then withdrawals must be made from the bank (such as my wife does) to keep the ph level up. When the alkalinity bank gets low (such as my bank account), then there isn't enough reserve to keep the ph in place. A good dKH level is 8-12 dKH. Much higher than that can cause calcium to precipitate. Hope this is clear for you. James (Salty Dog)> A million thanks!

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Date: Jul 17 2013 7:54 PM