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#3684 03/06/06 03:13 PM
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I was told that soda ash would work well to ensure the sealing of a new pond. .15 lbs. per sq. ft. Has anyone ever used it? Thanks

#3685 03/07/06 10:47 AM
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You should only use any chemical compound in your pond to address a problem. Soda ash is sodium carbonate And is used to raise the ph of swimming pools. Here is a link explaining why Pond bosses use agricultural lime instead and in what circumstances they should be used.

http://www.ext.vt.edu/pubs/fisheries/420-254/420-254.html


Please no more rain for a month! :|
#3686 03/07/06 12:02 PM
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Soada ash is usefull only on certain types of soil, specifically those with a lot of calcium in the clay, often clays formed over limestone. Clays of this type tend to form a clump structure which doesn't seal itself very well. The soda ash helps the clumps to disperse and bond together. Works different than bentonite and only on the right type soil.

#3687 03/08/06 09:38 AM
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Thanks guys

#3688 02/03/07 11:38 AM
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Here's a site that mentions 'soda ash' as a pond sealant. Univ. Tenn. Ponds
[URL=[URL=http://www.cqconcepts.com/chem_sodiumcarbonate.php]]Sodium Carbonate

According to Univ. of Tenn., if you have a high calcium level, it's useful. Hmmm, all I can find is 1 reference that high PH soils have calcium. I have access to some marginal low clay content loam just above my future pond site. Think I'll send off a soil sample for testing this April while in Alabam. ;\)


Self-educated rednecks, the real intelligentsia.
#3689 02/03/07 04:24 PM
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Very good idea !! Try this link for ref. as to the question about Ca.

http://srac.tamu.edu/tmppdfs/127565-464f...8bbc0e621462a54

Carbonates and bicarbonates are the most common and most important components of alkalinity. A
total alkalinity of 20 mg/L or more is necessary for good pond productivity. Total alkalinity is expressed
as milligrams per liter or parts per million calcium carbonate (mg/L or ppm CaCO3). In water with moderate to high alkalinity
(good buffering capacity) and similar hardness levels, pH is neutral or slightly basic (7.0 to 8.3) and does not fluctuate widely.

















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