When the water has completely drained out of the plumbing lines (or after you've blown out the lines), put winterizing plugs into the return and skimmer lines. Add non-toxic pool antifreeze to all lines. This specialized antifreeze should be added at the rate of one gallon per 10 feet of pipe.
After draining the water to winter levels, put antifreeze in the skimmer opening to prevent water from freezing in the pool's plumbing lines. Most pools require approximately 1 gallon of antifreeze to ensure the plumbing is protected.
First off, should you use antifreeze as part of the pool closing process? The answer is — it's not necessary if you properly blew out the lines. That task gets water out of the pipes so they don't freeze during winter. But if you properly winterized your pool, there should be no need to add antifreeze.
Super chlorinate with liquid chlorine or other chlorine source and add winterizing chemical kit to pool; allow filter to circulate to evenly distribute chemicals. (Use chemicals as labels indicate.) Use 1 gallon of liquid chlorine per 10,000 gallons of pool water.
Liquid chlorine is preferred over chlorine tablets by pool professionals however home swimming pools will benefit too. Liquid chlorine quickly raises or maintains chlorine levels without raising stabilizer. Chlorine tablets maintain chlorine levels and add stabilizer to the pool water.
All pool chemicals, aside from unstabilised liquid chlorine, are good for up to three to five years as long as they're stored in a cool and dark place away from sunlight and they're packed in air-tight containers.
Do not use antifreeze in your pool equipment as the salts and glycol can react harshly with both the metal and rubber components causing damage to them. Antifreeze also reacts dangerously with chlorine so refrain from adding it to a chlorinator. Don't add antifreeze to any of your pool equipment.
Pool antifreeze is not for the pool, but for the pipes. For aboveground pools, you should use an air pillow to break up the ice sheet that forms in the pool, or you can use half a dozen milk jugs, filled partially with pebbles and pool antifreeze, to absorb the ice expansion.
ANSWER: Pool antifreeze won't harm the pool if it gets in the water because it is non-toxic or dangerous to pets or people. It may, however, make your pets sick if they drink the water. Again, never use automotive antifreeze because it IS harmful to swimmers, human and canine.
Even if you have your pool covered, some debris may still get in it during the winter. For this reason, you should consider running your pump on occasion whenever the outdoor temperature is between 35 and 65 degrees. Around four to six hours should be sufficient to remove debris and help promote good circulation.
Shocking the pool during the winter months can certainly help to avoid a green swamp-like pool in the spring. It's often recommended. However, poor water balance or improper application can lead to unintended consequences, such as discoloration and damage to pool surfaces.
Lower the water level to below the skimmer. Clear pipes and equipment of water using a blower or compressor and plug the pipes at the pool. Add swimming pool antifreeze to the lines to prevent freezing. Place a Gizzmo* (or similar device) in the skimmer to seal it and absorb pressure from ice.
Dichlor is perhaps the most “best of all worlds” chlorine sanitizer. It is typically found in concentrations of 60-65%, which is comparable to cal-hypo. It is a powder sanitizer, which makes it easier to spread or broadcast around the pool than chlorine tablets.
Shock is liquid or granular chlorine. You should add one gallon (or one pound) of shock per 10,000 gallons of pool water every week to two weeks. During hot weather or frequent use, you may need to shock more frequently.
Are chlorine and shock the same thing? SKIMMER NOTES: No. Chlorine and shock are not the same thing. Shock has a more intense chemical strength than the traditional chlorine sanitizers, and it also differs in how you should apply it to your swimming pool.
Short answer: yes. Longer answer: it depends on the formulation. The label on every bleach bottle should tell you the ratio of sodium hypochlorite (and available chlorine) in the bottle to everything else. A higher percentage is generally better, as you'll need to use less bleach to treat your pool.
The liquid form of chlorine is the cheapest way of adding chlorine to a pool. Simply pour it directly into the water in front of a return jet to disperse it throughout the pool.
NEVER just throw them into your pool water. This will cause them to dissolve on the floor and it can damage and create a permanent bleach stain to your liner or concrete.
If you have an above ground pool with the pool filter system and plumbing above ground (like nearly all above ground pools), pipes and pumps can freeze up in less than an hour of minus 32 degrees. The same is true for inground pool equipment that is not running when temperatures are below freezing.