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Does what it is supposed to. Mar 09, 2011
By Mark S. Anderson
"Adjuster"
Works and isn't too expensive. It is very important to keep the chemical levels at the proper settings in your spa to prevent the metal parts from corroding, scum and algi buildup and bacteria from forming. By not keeping a close eye on my chemical balance I have lost two heaters to the insides corroding out. Now that I know what was causing the problem I check my chemical balance daily.
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