There are currently 7 names in this directory beginning with the letter M.
A measure of the amount of magnesium dissolved in the water. It is a part of total hardness and causes scale if levels are too high.
The part of the pool that provides water circulation and is located in the center of the deep end on the pool bottom. Water can be removed from the pool through the main drain.
This is sometimes called "tap" or "refill" water. It is the water used to replace water lost to evaporation, splash-out, leaks or swimmer drag-out in the pool.
A unit of length equal to 1 millionth of a meter - it is .000394 of an inch. Microns are used to describe the pore size of filter media. Sand filters have openings of 25 to 30 microns; cartridge filters have openings of 8 to 10 microns; and Diatomaceous Earth (D.E.) filters have openings of 1 to 5 microns. Humans, without magnification, can see objects about 35 microns or larger. A granule of table salt is between 90 to 110 microns.
Any substance that is neither animal or vegetable. It is any class of substances occurring in nature, usually comprising of inorganic substances, such as quartz or feldspar, of definite chemical composition and definite crystal structure. It sometimes includes rocks formed by these substances. Ground water dissolves these rock substances, and the dissolved minerals are present in tap water. Depending on the kinds of rocks the water comes in contact with, the minerals dissolved in the water may be just a few or may be many. Water hardness is mostly comprised of these minerals.
A lever controlled chamber with a number of settings to allow you to backwash.
A solution of 31.45% Hydrochloric Acid - also called liquid acid. It is used for lowering pH, Total Alkalinity and for various cleaning needs. It is also used for acid washing.
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