Secondly, how much HTH shock do I need for a 1000 gallon pool?
For example, HTH Super Shock! asks for one pound per 13,500 gallons. So for a 21-thousand gallon pool, you’d want to round up to two pounds of shock. Always round up to make sure your pool gets enough chlorine.
In this regard, how do you read HTH pool strips?
Just dip your test strip in the pool water and see results on the color strip in seconds. Compare it to the color strip on the side of the bottle, or text a photo of your test strip to 484-123 and get personalized pool instructions in seconds.
Does Oto test free or total chlorine?
Total chlorine is the sum of free chlorine and combined chlorine. Inexpensive chlorine tests, such as the common OTO test, which shows total chlorine as different shades of yellow, measure true chlorine because it is easier to test for than free chlorine and combined chlorine.
Oto measures the amount of chlorine/bromine and Phenol measures the pH of the water.
OTO Chlorine Test
- Rinse the chlorine test cell with pool water.
- Fill the chlorine test cell with pool water to the mark.
- Add 5 drops of R-0600.
- Cap the test cell and invert to mix.
- Match the shade/saturation of yellow against the color chart.
- Dispose of the sample safely.
Excess chlorine can alter the pH level of the water in the pool, making it more acidic. The acid levels can cause any of the following symptoms: Irritant dermatitis which is a red skin rash characterized by raised itchy red bumps. Eye irritation and over-dilated blood vessels in the eyes.