When choosing the right shock treatment, there are four
things to look for.
#1. Concentration – How many
gallons of water does one bag treat?
#2. pH of the shock – How it
affects the balance of your water.
#3. Application – How it’s
applied; either broadcasting or pre-dissolving.
#4. Non-chlorine, chlorine, or stabilized
chlorine.
The first shock is lithium hypochlorite. One bag treats
10,000 gallons. The pH is 10.7, reducing the need of
pH increase. It’s applied by broadcasting over
the pool surface. It will not bleach the liner. It’s
unstabilized – apply at night and you can swim
by 3 pm the next day.
The next shock is dichlor. One bag treats 8,000 gallons.
The pH is 6.7, essentially neutral. It’s applied
by adding directly to skimmer at night. It’s stablilized
and cyanuric acid levels should be monitored.
The next shock is calcium hypochlorite. Once bag treats
7,500 gallons. The pH is 10.8, reducing the need for
pH increase. It’s applied by pre-dissolving in
a pail of water and added directly to pool at night.
It’s unstabilized.
The last option is potassium monopersulfate. One bag
treats 10,000 gallons. Te pH is 3.7, for every 3 lbs
add 1 lb of soda ash. Apply broadcasting. Non-chlorine;
swim immediately after application.
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