It really depends on the size of your pool. A normal 25,000 gallon pool would require about 6.5-7lbs. of chlorine to bring it up 10ppm.
Go to the link below for a chart on shocking.
Check your Ph level. This can also make pool cloudy.
Half a cup to a cup
It is 0.4 ounces.
1/2 a bag OS shock
better to get a bag of shock rather then guess and do it yourself local pool supply should have it
a dollar- that's how much shock for the pool costs
I would not shock the pool unless you have problems like the water is getting cloudy or worse if it starts to turn green. Realistically, if nobody is urinating in the pool or unless you have extremely large bather loads shocking is not required. Before shocking make sure to test the pH and adjust it to 7.2-7.4. Then make sure there is adequate chlorine in the pool (1 -3PPM). IF you still require shock, buy a non-chlorine shock (potassium monopersulfate). For a 4,000 gallon pool, follow the directions on the product. It usually comes in a one pound packet and about a half of that bag should do it.
normally when there is no reading for chlorine means that you need it, put 1 gallon of liquid shock in your pool. that will raise the chlorine level, cheryl
It's best to pour the bag of shock into an empty gallon jug, say from algecide or water and then fill it with water till it dissolves then pour in thru skimmer. If the powder just sits on the pool liner bottom, it will eat at the vinyl.
About 300 gallon.
Backwash first then shock. If you shock and then backwash you will be throwing away the shock you just put.
Wait a couple of days and it will dissipate.
Approximately 200 lbs.
about 3 oz.