Epsom Salt?

[txhomebrew]

Hey gang, been a while. 12,000 plaster with Watermaid EZ300. Cell died after 11 years and used bleach last year.

Draining this spring to Acid Wash and repair some spots in the plaster.

Watermaid recommends adding 25Kg of Magnesium Chloride to keep deposits down on cell, Thats 55lbs! in addition to 600 lbs of salt to reach the 6000ppm! I personally never go over 5000ppm.

So does anyone add Epsom Salt (Magnesium Sulfate) at these levels?

[Poolsean]

The sufates are not good for the cells and should be avoided. It tends to deplete the ruthenium oxide coating on the blades prematurely.

[txhomebrew]

Thanks, Sean, Watermaid is recommending "20ppm" Magnesium Chloride my mistake and 20ppm would only be 2lb in 12,000 gallons. 2.5lbs of magnesium chloride flakes at amazon for 10 bucks...Can't hurt?


http://www.watermaid.com/media/pdf/p...ng%20Pools.pdf

[waterbear]

The idea is to raise magnesium hardness since magnesium scale does not get hard but stays soft and rinses off easily.
Lo-chlor makes a magnesium additive for salt pools called salt cell protector for this reason. Whether it works I could not tell you.

[Mark_WATERMAID]

I know that this post is pretty old but I think that I should throw in my two cents. Wateramaid recommends that customers add 50 lbs. of magnesium chloride to their pools every year. Calcium is attracted to the cathode plate of a salt chlorinator and can form hard scale. Adding magnesium softens the scale and makes it mushy. Normal water flow tends to flush the scale off of the cell plates. It also adds hardness to the water without using calcium. This once again reduces scale formation. Magnesium chloride will not harm a Watermaid cell. In fact it will increase the cell life. If you let a cell scale up, water flow will reduce and the cell will overheat. This will damage the cell