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Re: increasing pH

Here's my secret, I have used a dolomite powder, available at Orchard Supply Supply Hardware in 50lb sacks for hardening water for my Lake Tanganyikan cichlids in the past. I've been told dolomite contains both calcium and magnesium and I've thrown handfuls of this stuff into my Tanganyikan tanks without hurting any of the fish. The problem with dolomite rock as a buffer is that it stops buffering after a while, whereas the powder has a much greater surface area contactin the water. The usual use for Dolomark (dolomite powder) is for whitening concrete.

From: BigJohnW@webtv.net (John Wubbolt)
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To: apisto@listbox.com
Subject: Re: increasing pH
Date: Wed, 16 Jan 2002 22:39:03 -0500 (EST)
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Well here goes my 2 cents worth on this topic.

I have extremely soft acidic water... when i need to have a tank that
doesnt go too far down in pH.... anything below 6.0.... i add alittle
dolomite into the tank.   If i am using a bare bottom tank set up , i
put about 1/2 cup worth in a little jar and sit the jar in the corner of
the tank.   This leaches off carbonate hardness, which will keep the
water from being too soft and also keeps the pH up and from going too
acidic.    No this doesnt cause my tanks to be hard and alkaline.   If
used in small amounts, this has the perfect desired effect without
having a bouncing up and down pH like you will have using sodium
bicarbonate.   Using baking soda, is a temporary fix.. it will bounce
back up with water changes and also as time goes bye.

Hence my suggestion , use alittle baby food jar with some dolomite or
crushed coral in it and set it somewhere in the corner of your tank.
I've been doing this for over ten years to keep my tanks stable.

Little John

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Ed Pon Milpitas, California 95035

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