what level should my hardness be set to
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- The hardness of your water converts to 7.06 gpg. You should set your hardness to 8-10 gpg. If there are only 2 people in the household, you should set the hardness level to 25 gpg. For best results the softener should regenerate once a week. With low water usage the softener will only regenerate every 10-12 days.
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What type of water best for gold fish? U should also use a chlorine neutralizer and water conditioner. Normal tap water damages the fish because of the chlorine stripping the natural slimy protective coating of the fish and could ultimately kill the fish. the hardness should be 100-150. Most aquariums or pet stores can check the PH and Hardness for you if you are unsure of how to do it or cant afford the test kits.
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- Protecting the Hot Tub From Water Impurities. 1  1. Measure the calcium hardness of your water when cool. Turn off your heater and let your water cool. 2  2. Add hardness increaser to low calcium water. You want your calcium level to be between 200 and 400ppm. 3  3. Remove hard water if too much calcium is present.
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What hardness level should my water softener be at.? I don't know what the hardness of our water is, but our water softener is set at 45 (the highest level it can go to) What is the general area that the hardness level should be at?
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- The answer surprisingly is no. Metal hardness is measured by what is called the Vickers scale where harder metals receive a higher Vickers score than less hard metals. 9ct has a Vickers hardness of 120 and 18ct has a Vickers hardness of 125.
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- Expected Levels. Total hardness in freshwater is usually in the range of 15 to 375 mg/L as CaCO3. Calcium. hardness in freshwater is in the range of 10 to 250 mg/L, often double that of magnesium. hardness (5 to 125 mg/L). Typical seawater has calcium hardness of 1000 mg/L, magnesium.
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Gemstone Hardness The Mohs scale of mineral hardness was created by German mineralogist, Friedrich Mohs, in 1822 to measure the relative hardness or scratch resistance of various minerals. He based it on ten readily available minerals. As it is an ordinal scale, two minerals must be compared to decide which is harder.
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- 1 Answer from this member: The water hardness setting is determined by the hardness of your water supply. If you do not know the hardness of your water supply you can take a sample into Sears and they can test the sample and give the hardness level.
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How many hours a day should i wear my contact lenses? In the fifth day, you can wear it within 12 hours, but the regular wearing time for the ordinary contact lenses is 8 hours. For the rigid gas permeable contact lens, the wearing time is between 10 and 12 hours, so it all depends on the oxygen permeability of the contact lens. 09/10/2012. good (0) Report Abuse.
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- Balanced water has a pH level of 7.4 and 7.6. A total alkalinity range of about 80-120 ppm. Chlorine in the range of 1.0-3.0ppm. If your pH, your total alkalinity and your calcium hardness is too low, metal corrosion and. staining of the pool plaster can occur. If your pH, your total alkalinity and your calcium hardness. is too high, scaling, cloudy water and discolored plaster can occur. You should check your pool chemicals at least once a week, and adjust accordingly.
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- Hardness is the resistance of a mineral to being scratched. This test is also the most useful in narrowing down the type of mineral to be identified. The Moh's Scale of hardness lists ten minerals in order of hardness from 1-10 with 1 being the softest and 10 being the hardest.
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How to Reduce Pool Water Hardness & Alkalinity Test the pool water for hardness. Dip a test strip approximately 18 inches below the water surface, or as directed by the test manufacturer. Remove the strip and wait until the color changes to indicate the hardness level. Compare the results to ideal levels of between about 200 and 400 ppm.
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- How do you read the Mohs scale of hardness? the bigger the number for that particular mineral, the harder it is. it ranges from 1-10, diamond being 10, the hardest. Edit
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- As discussed in the Water Softeners Buying Guide, hardness of water is measured by grains per gallon (GPG) or parts per million (PPM) of dissolved hardness minerals. Water with less than 3.5 GPG is considered relatively soft; water with more than 10.5 GPG is very hard.
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How do I decrease water hardness levels in my pool Hard swimming pool water. There are commercial pool products to remove hardness or calcium levels. They can be used once off if the hardness is an accumulation, or can be added weekly if the fill water is very hard. Keeping the pH a little low (pH 7.0) can prevent scale problems associated with hard water.
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- The following chart indicates how you might test a mineral for hardness using a combination of Friedrich Moh's and field hardness scales. 1 represents the softest mineral while 10 is used for the hardest mineral.
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Rockwell Hardness Testing The Rockwell hardness number is expressed as a combination of the measured numerical hardness value and the scale letter preceded by the letters, HR. For example, a hardness value of 80 on the Rockwell A scale is reported as 80 HRA.
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Vickers hardness test The unit of hardness given by the test is known as the Vickers Pyramid Number (HV) or Diamond Pyramid Hardness (DPH).The hardness number can be converted into units of pascals, but should not be confused with pressure, which also has units of pascals.The hardness number is determined by the load over the surface area of the indentation and not the area normal to the force, and is therefore not pressure.ickers hardness numbers are reported as xxxHVyy, e.g. 440HV30, or xxxHVyy/zz if duration of force differs from 10 s to 15 s, e.g. 440Hv30/20, where: 1  440 is the hardness number, 2  HV gives the hardness scale (Vickers), 3  30 indicates the load used in kgf.
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- Metal hardness is measured by what is called the Vickers scale where harder metals receive a higher Vickers score than less hard metals. 9ct has a Vickers hardness of 120 and 18ct has a Vickers hardness of 125.
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Hardness Scratch hardness is the measure of how resistant a sample is to fracture or permanent plastic deformation due to friction from a sharp object. The principle is that an object made of a harder material will scratch an object made of a softer material.cratch hardness is the measure of how resistant a sample is to fracture or permanent plastic deformation due to friction from a sharp object. The principle is that an object made of a harder material will scratch an object made of a softer material.
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- Example: hardness in grains per gallon from test strip is 20 + 15 = 35 = setting #. This is a temporary setting until you have an accurate water test. If the result of your hardness test strip reaches the test maximum of 25 grains per. gallon, mix 1 cup tap water with 1 cup distilled water, then retest for hardness.
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Hardness Rather, it is a method of gauging the relative hardness of a mineral. If a mineral cannot be scratched by a knife blade but can be scratched by quartz then its hardness is between 5 and 7 (stated as 5-7) on Mohs scale. A relative hardness value of 6.5 means that the mineral could scratch orthoclase (feldspar) but not quartz.
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Hardness A measure of the ease with which a smooth surface of a mineral can be scratched, or of its resistance to abrasion. In 1822 the Austrian mineralogist Friedrich Mohs devised a scale based on one mineral's ability to scratch another. He placed 10 minerals in order from softest to hardest, giving a relative hardness value of 1 to the softest mineral, and 10 to the hardest.
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Heat Treating : The hardness of steel is determined by carbon content. No carbon and it can't be hardened other than by work hardening. Increasing the carbon content from 0.01% to .10% increases the hardenability and the strength. This is then modified by the addition of alloying metals as well as the alloy metals having their own properties.
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Basic Water Chemistry Part 1: Water Hardness Well water from areas which have a lot of limestone (calcium) is often hard. Water that comes from lakes and rainwater is often devoid of minerals, making it soft. It is important that you know the hardness of the water in your fish tank. Hard water (high mineral content) is usually high in pH. Soft water (low mineral) is usually low in pH.