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Pool Care Guide

How To care for you pool pump


- How to replace a WhisperFlo pump seal, five simple steps!




Balancing Pool Water Chemistry

Basic Pool Water Chemistry Facts you need to know:

The water chemistry balance of swimming pool changes daily due to use of pool, weather condition, addition of sanitizing chemicals, and runoff.
Improper chemistry balance can cause corrosion, scaling and deposits to the pool walls and equipment. Corrosion and scaling can be difficult and expensive to fix once formed. Maintaining the correct chemical balance in your pool/spa will keep the pool/spa sanitary, and prevent costly repairs to pool or equipment. Use our 4-way pool/spa watertest kit to check for Chlorine, pH, Alkalinity and Conditioner levels.

  Recommended
Level
Effect of Low Levels Effect of High Levels
Chlorine 1 - 3 ppm hazy water, algea growth,
bacteria causing infections
Swimmer irritation, bleaching of clothes/hair,
corrosive to heat exchanger
Bromine 2 - 4 ppm hazy water, algea growth,
bacteria causing infections
Swimmer irritation, bleaching of clothes/hair,
corrosive to heat exchanger
pH 7.4 - 7.6 corrodes metal parts,
swimmer irritation
cloudy water, scaling of heat exchanger,
reduced sanitizer effectiveness
Total Alkalinity 80 - 120 ppm corrodes metal parts,
large fluctuations in pH
scaling of heat exchanger
Calcium Hardness 200 - 400 ppm corrodes metal parts, scaling of heat exchanger
Salt 2700 - 5000 ppm poor salt chlorinator performance, low chlorine corrodes metal parts,

Water Chemistry and Treatment Guide

 

pH
Chlorine
Alkalinity
Cyanuric Acid
How do I test?

pH

pH is a measure of how acidic or basic a liquid is. A pH greater than 7.0 is basic, and a pH lower than 7.0 is acidic. The acceptable pH level for pools and spas is between 7.2 to 7.8 for residential pools. The National Spa and Pool Institute (NSPI), the industry association in the United States, has set a standard of 7.2 to 7.6 as the ideal pH. If the pH level of your pool or spa is off, first check the Alkalinity level and make any necessary adjustment to the Alkalinity level before you adjust the pH. This will prevent sudden fluctuation of pH level.

Raising pH with Soda Ash (Sodium Carbonate)

pH level
1,000 gals
5,000 gals
10,000 gals
15,000 gals
25,000 gals
 
7.0 - 7.2
3/4 oz
4 oz
8 oz
12 oz
1 1/4 lb.
 
6.7 - 7.0
1 1/4 oz
6 oz
12 oz
1 lb.
2 lb.
 
under 6.7
1 1/2 oz
8 oz
1 lb.
1 1/2 lb.
2 1/2 lb.

What happens if pH is too low?
- The water can corrode surfaces, metal equipment or fixtures.
- Swimmers and bathers can experience discomfort from burning eyes and itchy skin.
- The chlorine may dissipate more quickly.
- The water may cause pitting and etching of plaster surfaces

Lowering pH with Dry Acid (Sodium Bisulfate)

pH level
1,000 gals
5,000 gals
10,000 gals
15,000 gals
25,000 gals
7.8 - 8.0
0.1 lb.
0.3 lb.
0.6 lb.
0.9 lb.
1.5 lb.
8.0 - 8.4
0.2 lb.
0.5 lb.
1.0 lb.
1.5 lb.
2.5 lb.
Over 8.4
0.3 lb.
0.8 lb.
1.5 lb.
2.3 lb.
3.8 lb.

What happens if pH is too high?
- Calcium and metals tend to come out of solution (the opposite of dissolving) at high pH levels, creating the potential for staining and scale formation. The calcium and metals will actually create deposits and discoloration on pool walls and equipment.
- Swimmers and bathers can experience discomfort from burning eyes and itchy skin.
- High pH can contribute to cloudy water.

 

Chlorine

There are two indicators for chlorine level in pools or spas: Free chlorine and Total Chlorine. Free chlorine indicates the active chlorine available in the water to to keep water sanitized. Total Chlorine indicates the chlorine in the pool that has been used to sanitize the pool. Too much Total Chlorine can cause eye irritation. Make sure you keep proper Free Chlorine level in you pool/spa water. pH and Alkalinity must be adjusted to proper ranges before adjusting chlorine level.

Chlorination Chart - Pools (amount required to raise chlorine level by 1 ppm)

Type of Chlorine
5,000 gals
10,000 gals
15,000 gals
25,000 gals
 
Sodium Hypochlorite
5 1/2 oz
10 1/2 oz
1/2 qt.
3/4 qt.