Our Best Tips for Fall Pool Closing

Fall has arrived in the beautiful Northwest. If you’re not yet convinced about the amaz­ing pool covers we featured recently in the blog, it’s just about that time again… Time to get the kids out of the pool and get it ready for winter.

The swim­ming pool clos­ing tips below come to you cour­tesy of Pool Life, the online mag­a­zine for pool & spa owners.

It’s also a very good idea to throw kick­boards or some­thing com­press­ible into the pool or spa to pre­vent any ice that forms from push­ing on the tile wall and doing seri­ous damage.

When the tem­per­a­ture drops and the kids swap their swim­suits for school uni­forms, it’s time to pull out your pool-closing check­list.

If you’re a new pool owner, it’s a good idea to have a pro­fes­sional close your pool the first time. Own­ers who have been through the process at least once can close their pool in four easy steps.


Here are few more swim­ming pool clos­ing tips. Bal­anc­ing the water is arguably the most impor­tant step in clos­ing your pool. A good chem­i­cal bal­ance pre­vents cor­ro­sion, stain­ing and algae growth, says Rick Jan­u­ary, tech­ni­cal ser­vices rep­re­sen­ta­tive with Arch Chem­i­cals, Inc., now part of Lonza.
Start by run­ning the cir­cu­la­tion sys­tem and bal­anc­ing the pH and alka­lin­ity lev­els. Then stop by your local dealer with a sam­ple; your dealer can help you deter­mine whether you need to add any addi­tional chem­i­cals before closing.
If shock is rec­om­mended, be sure you’ve removed all phys­i­cal debris from the pool (sticks, leaves, etc.), and vac­uum or brush the liner to remove any addi­tional con­t­a­m­i­nants. Then shock the water to address any chlo­rine demands and kill any exist­ing algae.
If your water test revealed a pres­ence of met­als, Jan­u­ary says, “You will want to include a stain­ing pre­ven­ter to avoid stain­ing over the winter.”

Don’t Empty

It is impor­tant to leave chem­i­cally bal­anced water in the pool through­out the win­ter to keep algae and con­t­a­m­i­nants away. It’s frequently advised to drain some water from the pool in case of freezing. We don’t recommend this because when you drain to the same level this year after year, it leaves a permanent line in the plaster.  During very cold water—20 degrees Farenheit or below, run the pump to circulate the water and turn the heat on slightly to keep the pipes from freezing.


To avoid new con­t­a­m­i­nants from enter­ing the water, put the cover on right away. A good cover will keep out con­t­a­m­i­nants as well as light and heat that could trig­ger algae growth.
In addi­tion to prop­erly stor­ing the water away beneath your cover, plan to safely store all chem­i­cals.
“The best thing to do if you have liq­uid chem­i­cals is to use those before the end of the sea­son, par­tic­u­larly if you have san­i­tiz­ers and shocks,” Jan­u­ary says, not­ing that these could degrade over the win­ter months.

For chem­i­cals you are plan­ning to keep, Jan­u­ary rec­om­mends pool own­ers fol­low these three rules:

  1. Do not store liq­uids above solids.
  2. Keep oxi­diz­ers away from other chemicals.
  3. Keep all chem­i­cals out of the weather.


Once the cover is on and the chem­i­cals are stored safely, it’s time to tidy the pool area and stow away any remain­ing equip­ment. This includes stor­ing your fil­ter, pump, heater, vac­uum equip­ment, lad­der and auto­matic clean­ers. You may also opt to store your hoses, skim­mer bas­kets and drain plugs—just make sure you put them in a place where you can find them next year.
While you prep your equip­ment for the cold, Jan­u­ary says to inspect all equip­ment for any dam­age or degra­da­tion that could be repaired or replaced dur­ing the offseason.

If you get things right in Sep­tem­ber, then spring is going to be a lot eas­ier,” Jan­u­ary says.


Hope these swim­ming pool clos­ing tips have helped. As always, if you have any ques­tions or need some coach­ing on clos­ing up your pool safely and com­pletely, just email us or give us a call at 503–631-4816.



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