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post #1 of 7 (permalink) Old 01-26-2003, 06:06 PM Thread Starter
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is correct that baking soda will raise the ph kh and gh of water?
-if so how much do you dose
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post #2 of 7 (permalink) Old 01-26-2003, 06:29 PM
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Baking Soda will raise the KH. It will raise pH to a maximum of about 8.5. Above pH 8.5, KH will continue to increase as you add more baking soda but pH will not.

I've always dosed it a little at a time and then re-measured the pH/KH. About 1 teaspoon per 10-15 gallons would be a fairly safe starting place.

Take care...

Tim

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post #3 of 7 (permalink) Old 01-26-2003, 08:23 PM
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ok is calcium carbonate the same as baking soda or whaty some say to use bakeing soda others say to use clacium carbonate and irt rases the ghand kh
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post #4 of 7 (permalink) Old 01-26-2003, 09:26 PM
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start with calcium carbonate to get the GH up to 4 or so. then measure KH and it will probably be close to 4 as well. if it is still lower than that you might want to add some baking soda. in any case start by practicing on a gallon of tap water to get a feel for the proportions needed. when adding to the tank go slow...

jtm
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post #5 of 7 (permalink) Old 01-26-2003, 09:43 PM
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Baking soda is sodium bicarbonate.This will up the Ph.Calcium carbonate is similar and will also up the Ph .Carbonate hardness (Kh) will also go up.

15gal planted,flourite+volcanite,65 watt pc,whisper 2 filter,5lb CO2 tank and diffuser,flourish .
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post #6 of 7 (permalink) Old 01-26-2003, 11:45 PM Thread Starter
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oh yeah why do some poeple add baking soda to DIY CO2
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post #7 of 7 (permalink) Old 01-27-2003, 02:40 AM
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My guess is to stabilize the Ph from going down during the reaction.Probably keeps the yeast active longer.

15gal planted,flourite+volcanite,65 watt pc,whisper 2 filter,5lb CO2 tank and diffuser,flourish .
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