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Old 06-08-2005, 07:44 PM   #1
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help dosing alkalinity buffer

my tank always seems a little low on pH and alkalinity...mainly cuz I have no idea how much of my buffer to add.

I use this site for dosing calcium: http://home.comcast.net/~jdieck1/chem_calc3.html

however they don't have my alk buffer listed. I use Kent's Superbuffer dKh, which is a dry bicarbonate buffer. The label reads: 1 tsp dissolved in 8oz water, per 30gallons, every day until you reach target levels.

Currently I'm sitting at 2.8meq/L or 8 dKh.
Calcium is doing well at 425ppm...so I need to get alk up to 3.5meq/l to be balanced.

Can anyone shed some light on proper dosing? I suspect I'm severely underdosing the buffer, and at the current rate will never catch up.
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Old 06-09-2005, 09:30 AM   #2
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shameless bump.
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Old 06-09-2005, 12:10 PM   #3
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If this is for your 40 gal reef, the balance for 425 ppm Ca is 3.2 mEq/l. Use the Seachem dry buffer calculation, they are chemically the same/similar.

Calculating on an actual water volume of 38 gal (displacement), to raise the alk from 2.8 to 3.2 you would need about ¾ of a teaspoon or 3.5 grams.

Cheers
Steve
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