Gunite Swimming Pool Start-Up Procedures

The Woodlands Pool Builder

Gunite Swimming Pool Start-Up Procedures

A gunite pool finish will start to hydrate immediately after mixing, with the majority of hydration taking place within the first 28 days. To prevent staining, scaling and discoloration the pool must be properly cared for during this time. This includes timely brushing, constant monitoring and adjusting of the pool water is mandatory. The following recommended procedures are shown to produce the best results. Local water conditions and environmental factors can effect start-up procedures. Parts of these procedures may need to be modified to protect the pool finish.

For example:
Filling the pool with extremely low calcium hardness, low pH or low total alkalinity levels may necessitate changes to these procedures.

Brushing and monitored chemical adjustments will be mandatory by the homeowner or a trained pool technician during the service life of any pool surface.

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IMPORTANT - ALWAYS ADD A CHEMICAL TO WATER, NEVER WATER TO THE CHEMICAL

POOL FILLING DAY
1: Make sure the filtration equipment is working
2: Based on temperature and type of finish, fill the pool to the middle of the skimmer or specified water level without interruption as rapidly as possible with clean potable water to help prevent a bowl ring. Place a clean rag on the end of the hose, always placed in the deepest area, to prevent damage to the surface. If a water truck is required, 24 inches (60 cm) of water should be placed at the deepest area for a water cushion. 
3: Do not allow people or pets in the pool during the pool fill. Do not allow any external sources of water to enter the pool to help prevent streaking. (It is recommended that you do not swim in the pool until the water is properly balanced.)

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DAY 1
Complete IN ORDER
1: Test pH, alkalinity, calcium hardness and metals. Record test results.
2: High alkalinity should be adjusted to 80 ppm1 using pre-diluted Muriatic Acid (31-33% Hydrochloric acid). Always pre-dilute the acid by adding it to a five
gallon (19 L) bucket of pool water.
3: Low alkalinity should be adjusted to 80 ppm1 using sodium bicarbonate (baking soda).
4: pH should be reduced to 7.2 to 7.6 adding pre-diluted Muriatic Acid if the alkalinity is already 80-100 ppm.
5: Brush the entire pool surface thoroughly at least twice daily to remove all plaster dust.
6: Operate filtration system continuously for a minimum of 72 hours.
7: DO NOT add chlorine for 48 hours. DO NOT turn on pool heater until there is no plaster dust in the pool.

DAY 2 – Brushing the Pool
1: Test pH, Alkalinity and Calcium Hardness and repeat steps of 1st Day except for step 5.
2: Once the alkalinity is adjusted to 80ppm and the pH is adjusted to 7.2 to 7.6, then adjust calcium hardness levels to a minimum of 150 ppm.
(Caution: Adjustments requiring more than 20 Lbs of CaCl2 should be pre-diluted and added in 10 lbs incremements – morning and afternoon)

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DAY 3
1: Test pH, Alkalinity and Calcium Hardness and repeat 1st Day Steps 1 through 5.
2: Pre-diluted chlorine may now be added to achieve 1.5 to 3 ppm1. 
3: Brush the entire pool surface thoroughly at least twice daily to remove all plaster dust.

DAY 4 – DAY 28
1: Test pH, Carbonate Alkalinity and Calcium Hardness and repeat 1st Day Steps 1 through 4 every day for 14 days to help prevent the scaling of the pool surface.
2: On Day 7, if there is any plaster dust remaining – remove it using a brush pool vacuum.
3: After the Day 4 – calcium levels should be adjusted slowly over the 28 day period not to exceed 200 ppm1
4: After Day 4 – adjust cyanuric acid levels to 30 to 50 ppm1 based on the primary sanitizer of the pool (pre-dissolve2 and add through the skimmer).
*other conditions might cause a minor shift in schedule

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