Quote:
Originally Posted by Jared J
Buffers do not lower alkalinity, you would need an acid to lower it. Why do you want your alk lowered? You're saying your mag levels are 9? Mag should be around 1200-1300, something doesn't sound right. Ca should be around 400, anything higher is really unecessary.
I personally would do a good water change and try to get the Mag to proper levels and make sure Ca/Alk/Mag are balanced.
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Adding acid doesn't lower alkalinity... it increases acidity, lowering pH.
The Acid/Alkaline balance determines pH.
All you need to do is a water change, if you want to keep your pH high without adding excessive alkalinity (12 dKh is within normal range btw) use kalkwasser... use it as your top off water, that and SMALL additions to alkalinity just to maintain at 8 dKh has kept my pH at 8.1-8.3 steady.