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Old 07-30-2006, 11:08 PM   #1
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baking soda dosing?

Can you dose with baking soda to raise ph?
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Old 07-30-2006, 11:45 PM   #2
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I did a lot of reading on this once when I was having a severe drop in PH late at night when no stores were open. Some people say yes, I haven't found anyone saying absolutely not.

It's calcium carbonate, I believe, essentially the same thing you'll find in PH Plus products for swimming pools...
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Old 07-31-2006, 12:40 AM   #3
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I'm fairly certain that baking soda (correctly identified by Scoot as calcium carbonate) with increase KH, but will not affect pH. This WILL affect pH by making it more stable, but as far as I know won't otherwise directly affect it.
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Old 07-31-2006, 09:09 AM   #4
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and actually, it will drive down ph before the ph comes back up.
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Old 07-31-2006, 10:00 AM   #5
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I would get more surface ripple, for gas exchange. This should stabilize the pH. Are you using a hood? If so, that could be your pH problem.
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Old 07-31-2006, 10:34 AM   #6
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Baking soda is NOT calcium carbonate, which is what limestone is made of. Baking soda is sodium bicarbonate. It will give a higher kh value, and will slightly affect pH. It's a weak base that will increase the pH by maybe 0.2 if dosed correctly. Using 4 tsp per 50 gal of water , typically yields 0.2 increase in pH and 2-4 degree increase in kh. This is for freshwater tanks, since I dont have any experience with salt, but I can't imagine that it would be any different.


http://dictionary.reference.com/browse/baking%20soda
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Old 07-31-2006, 10:52 AM   #7
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You're right evercl92, sodium bicarbonate, I should have known that.
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250 pounds LR
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Custom acrylic sump from GlassCages.com
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Old 07-31-2006, 11:16 AM   #8
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Oops! Thanks for the correction, evercl92. I have an old aquarium book that is wrong! LOL.
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Old 07-31-2006, 10:30 PM   #9
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I did an experiment last night with some premixed water in a container. and thats exactly what it did. it raised my alk. and lowered my ph by about 2%. I have tried adding more surface ripple I even took my hood off and added another powerhead. did that for about 4 days and nothing.
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Old 07-31-2006, 10:36 PM   #10
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Kent Marine's Superbuffer-dKH raises it nicely, and adds buffer as well to help keep it there. But as you probably know, the best way is to find the reason its dropping and fix that.
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No-name 36W UV
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