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Posted by Chris Neaves
(CJN) on 5/10/2008, 4:50 am
196.2.124.251
The second part of the article on Bentonite.
Montmorillonite can be found in low grade deposits which will contain about 30% - 40% of its base elements. Whereas a high grade or pure form will contain over 90% montmorillonite in its natural form.
By treating Montmorillonite with soda ash, the meta-bentonite Sodium Bentonite, can absorb water to about 20 times their dry volume and give rise to permanent suspensions of gel like masses. The sub-bentonites, containing calcium become Calcium Bentonite, do not swell to this extent but are still capable of absorbing from their surrounding at a phenomenal rate and contain as many minerals as Sodium bentonite. Calcium bentonites are nonswelling and break down to a finely granular aggregate that is widely used as an absorbent clay. I would recommend that you use a calcium bentoine for the pond for these reasons. The Sodium bentonite also works well but is less easily dissolved into the pond water.
Montmorillonite contains a balance of minerals in their natural colloidal form, making it easily assimilated. The minerals present in montmorillonite enhance the production of enzymes in all living organisms.
The deposits containing only 30% - 40% of its base elements (montmorillonite) are considered a low grade in the mining industry. In order to improve the grading (purity) some products have to be refined or processed. The other 60% - 70% of unwanted material has to be removed. Only after refinement does it achieve a 80 or 90% purity as claimed. Montmorillonite are naturally mineral rich clays, formed many millions of years ago under certain geological conditions - therefore, it appears that some products have a small percentage of minerals added to bring the quality up to an acceptable level.
Montmorillonite absorbs water and fluids readily, swelling to a gel-like mass. This property makes it useful economically. Many industries, including textiles and chemicals, use it as an absorbent to refine out impurities. Montmorillonite is also used in drilling lubricants and as a plasticizer in moulding sands used in foundries.
Because montmorillonite clay is used as a human health food as well as in the fish industry, claims by health experts make interesting reading. An average mineral analysis of Montmorillonite by health experts demonstrate it contains no less than 67 minerals, including vital trace minerals. Recently it has been recognized and utilized by the cosmetic industry and by soil experts, who value it as an exceptionally good agricultural enhancement: crops grow faster, taste better, and are more resistant to disease.
Bentonite/Montmorillonite is used to seal dams, in bonding foundry sands, asbestos, and mineral wool, as drilling muds, in portland cements and concrete, ceramics, emulsions, insecticides, soaps, pharmaceuticals, and paints, in the manufacture of paper, for clarifying water, juices, and liquors, and as a water softener to remove calcium from hard water, removing colour from mineral and vegetable oils, also used as catalyst supports and absorbents in petroleum refining. Bentonite is also used as a binder in the animal feed industry.
If you every decide to buld a plastic lined pond use bentonite as a backing. By mixing bentonite into the soil and making it damp you get a wonderfully smooth, flexable protective backing to the liner when you fit it.
The idea that Montmorillonite clays could be used in the remineralisation of ponds originate in Japan. Natural mud ponds are lined with bentonite to seal them. It was also discovered that feeding small quantities to koi and occasionally bathing then in it or adding regulated dosages to the pond resulted in wonderful and significant effects on their colour and lustre. Montmorillonite can be easily added to your daily ration of food in small quantities. This is an excellent idea as it will replicate the koi feeding continuously off minute mineral rich particles on the floor of mud dams. Use calcium bentoinite for koi food.
Montmorillonite is used directly in the pond water each week in a recommended dosage. Use a calcium bentonite in the pond. Some products disperse more easily than others. Some have to be mixed with water before application whilst others can be sprinkled directly onto the pond surface. The pond will clear in about 6 - 10 hours, depending on the amount of organic material in the pond. Do not be worried in a new pond if the water does not clear in a day or two.
New ponds will take a long time to clear as the montmorillonite is trapped into the organic material in an established pond.
The difference between sodium bentonite and calcium bentonite can easily be seen. Sodium bentonite clumps more strongly and has a very alkaline pH. Therefore it is a good idea to rather use Calcium Bentonite in koi ponds. However it must be said that sodium bentonite works very well if it is used.
Although bentonite is found in many clumping cat litters and koi keepers are often tempted to use them in ponds these are best avoided. Manufactures of clumping cat litters often add chemicals to introduce a fragrance to the cat litters. Some cat litters are sprayed with a plastic compound to reduce the dust associated with the clay. Other cat litter have colorants added for commercial appeal. Unless you are absolutely sure – avoid clay cat litters in koi ponds.
Kind Regards,
Chris Neaves
P.S. Montmorillonite (calcium bentoinite) also makes a wonderful face pack!
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