Hot Tub Forum
Original => Hot Tub Forum => Topic started by: HT2020 on June 13, 2013, 07:53:41 pm
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My dealer specifically suggests that I superchlorinate my new 400 gallon Vanguard on every refill with "2-3 oz of dichlor". The Hotsprings instruction manual for suggests that I use 0.4 oz for "superchlorination". I find both suggestions surprising because 2-3oz of dichlor seems like an excessively large amount and 0.4 oz seems quite small. In fact, I use 0.5 oz on a daily basis after I use the tub. Therefore, my question is what constitutes "superchlorination"? My tub has an ozonator and a silver ion stick so I generally aim for FCL levels of 1-3ppm.
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I wouldn't spend too much energy on exact ppm on a fresh fill unless you are experiencing water quality issues. Your normal .5 oz is most likely sufficient.
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Watkins urges dealers to superchlorinate with at least two ounces when filling a new spa. They wet test 100% of their tubs, and even though they take steps to vac out as much water as possible, they can't get it all. During shipping, sometimes the remaining water gets a bit funky. Sorry, but your spa is only new once, the 2-3 ounces refers to that one-time first fill.
Water changes are very different, and a small amount of chlorine is usually fine: The tub most likely has good water left in it, and most tap water brings in it's own load of chlorine anyway.
HTH
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