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#120724 - 06/02/08 01:34 PM Adding gypsum to pond
wazzle Offline
Lunker

Registered: 07/24/07
Posts: 25
Loc: Southern Illinois
The gypsum I can purchase locally is in 40 pound bags and is of a pellet form. I added 200 pounds to a pond that is less than 1/2 acre but when added, the pellets sink immediately. Is this a problem or will it still dissolve and work to clear my muddy pond. I thought about dissolving the pellets in 5 gallons of water and pouring that mixture in the pond.

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#120805 - 06/03/08 08:48 AM Re: Adding gypsum to pond [Re: wazzle]
Theo Gallus Offline
Moderator
Lunker

Registered: 05/14/04
Posts: 12383
Loc: Central Ohio
Bump.
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#120810 - 06/03/08 09:08 AM Re: Adding gypsum to pond [Re: Theo Gallus]
ahvatsa Offline
Lunker

Registered: 10/02/04
Posts: 352
Loc: Poth/McCoy, Texas
You can broadcast it from shore with wind or use a small boat and troll motor in prop wash. We have used several tons. You will need 10-15 more bags to get improvement. Takes a week or so... give it some time.

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#120828 - 06/03/08 11:29 AM Re: Adding gypsum to pond [Re: ahvatsa]
Agent Offline
Lunker

Registered: 11/03/06
Posts: 45
Loc: Hockley, TX
We put most of ours in eroded areas and let the water wash it into the pond. Took about a month, but worked.
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#120846 - 06/03/08 02:05 PM Re: Adding gypsum to pond [Re: Agent]
WaterWizard Offline
Lunker

Registered: 11/08/07
Posts: 227
Loc: San Luis Obispo, CA, USA
I posted this question on another forum but maybe this one is more appropriate. Does anyone know any published application rates for aluminum sulphate?
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#120864 - 06/03/08 07:36 PM Re: Adding gypsum to pond [Re: WaterWizard]
Eastland Offline
Lunker

Registered: 04/20/03
Posts: 1039
Loc: Dallas TX
Go here for both alum & gypsum application rates :

http://agfacts.tamu.edu/D11/Calhoun/Mar/Recfish/Pondmgt/mudpond.htm

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#121398 - 06/09/08 01:35 PM Re: Adding gypsum to pond [Re: Eastland]
wazzle Offline
Lunker

Registered: 07/24/07
Posts: 25
Loc: Southern Illinois
My question is really concerning the pelletized form of gypsum. Is that the only way it comes? I was concerned that it sinking immediately may not be doing the job. Others have mentioned it floating on the surface for a while before it sinks. Does it work either way?

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#121412 - 06/09/08 03:15 PM Re: Adding gypsum to pond [Re: wazzle]
burgermeister Offline
Lunker

Registered: 02/27/05
Posts: 4025
Loc: Houston, Tx.
You will be much happier with aluminum sulphate. There are several formulas. Just give it some time(2 wks..to work, before re-assessing. Make a slurry with 1 tablespoon per gallon, that gives you a 1/250 ratio, then add 1, 2, 3, etc. tablespoons per gallon of the slurry to gallons of fresh water(you can use 1 teaspoon per quart and be close). The least amount to settle the solids is the amount to use. However much alum you use, add 40% that amount of hydrated or quick lime to maintain the ph. If you need to raise the ph a little, add more lime. I used 150# alum, followed by 100# lime in 3 increments about 2 wks. apart. My water went from 12 inch muddy visibility to 4 ft. clear in a month. Then slowly added fert. til now I have a nice green 24 inch bloom. This took about 3 months total. That is for about 1 million gallons.
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#329023 - 04/05/13 01:06 PM Re: Adding gypsum to pond [Re: WaterWizard]
Cherri106 Offline


Registered: 04/05/13
Posts: 1
Loc: Indiana
Has anyone used liquid gypsum to settle the muddy water in a pond?

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#329025 - 04/05/13 01:38 PM Re: Adding gypsum to pond [Re: Cherri106]
esshup Offline
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Lunker

Registered: 01/26/09
Posts: 24029
Loc: Grovertown, Indiana
Cherri:

Welcome to the forum. I haven't used it. Where do you find it in quantity in Indiana?
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#331477 - 04/21/13 09:22 AM Re: Adding gypsum to pond [Re: wazzle]
Rainman Offline
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Lunker

Registered: 06/06/07
Posts: 6962
Loc: St Louis, MO area
Cherri, I wasnt aware gypsum came in a liquid form. When it comes to Gypsum working to clear suspended clay, success is around 50% whereas alum/lime is 100% effective.
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