Clear start
Water is clear and the equipment is coming online. Confirm the baseline, then stay with the opening checklist below.
Opening
Choose the opening branch
Pick the start state that matches the pool now. The detailed opening checklist stays below for the clear-start path.
Cloudy start
Haze without visible green growth needs the cloudy-water workflow before you guess at chemicals.
Green start
Green or clinging water belongs on the algae diagnostic path first.
Heavy debris
Leaves, cover sludge, and settled residue need waste-line cleanup before the opening can settle.
Pump will not start
No prime, power, or startup means mechanical troubleshooting comes first.
Open the pool in the right order
Clean first, test second, correct third
Best when
- Clean first, test second, correct third
Check before you start
- Free Chlorine
- pH
- Total Alkalinity
- Calcium Hardness
- CYA
Stop if
- Do not add shock or algaecide before the pump is running and water is circulating
- Do not skip the drain cover and equipment safety inspection
Start here
Inspect equipment and test water before adding any chemicals.
Skip this
- ✕Do not add shock or algaecide before the pump is running and water is circulating
- ✕Do not skip the drain cover and equipment safety inspection
Check these first
Free Chlorine / pH / Total Alkalinity / Calcium Hardness / CYA
Opening day field checklist
Take this to the pad.
Opening day field checklist
Pool: __________________Date: __________________Clean PSI: ________
Inspect and Safety
- □Check drain covers are intact and secure
- □Inspect electrical connections and bonding
- □Verify GFCI operation
- □Check fencing, gates, and barriers
Equipment
- □Remove winter plugs and reinstall drain plugs
- □Reconnect pump, filter, heater unions
- □Prime pump and check for leaks
- □Record clean filter pressure: ___ PSI
- □Verify multiport valve position
- □Check all valves are in correct position
Water
- □Fill to mid-skimmer level
- □Run circulation long enough to mix before testing
- □Test: FC, pH, TA, CH, CYA
- □Record opening baseline numbers
- □Do not add chemicals until the first mixed-water test supports the dose
After Circulation
- □Adjust pH first if needed
- □Add initial chlorine dose per calculator
- □Add CYA if below target
- □Wait 48h before retesting CYA after addition
1
Remove debris before dosing
The fastest way to make opening harder is to dump cover water and decomposed debris into the pool.
2
Verify equipment prime and valve positions
Find winter damage while the system is still quiet and not under pressure.
3
Test before buying opening chemicals
A test result is not useful until the pool can mix and the pump can move water.
4
Branch to cloudy or algae workflows if startup is not clear
Opening chemistry starts with a result set, not a shopping list.
5
Choose the branch from the evidence
A clear pool, cloudy pool, green pool, and broken circulation system should not share one checklist.
6
Make only the justified additions
Sequential dosing makes the next test meaningful.
7
First 24 hours: clean, filter, retest
The first day proves whether opening actually stabilized.
Resources (1)
Weekly / Monthly / Quarterly Maintenance Routine Packet
A printable owner packet that turns weekly, monthly, and quarterly pool maintenance into one repeatable checklist.
Opening day field checklist
Pool: __________________Date: __________________Clean PSI: ________
Inspect and Safety
- □Check drain covers are intact and secure
- □Inspect electrical connections and bonding
- □Verify GFCI operation
- □Check fencing, gates, and barriers
Equipment
- □Remove winter plugs and reinstall drain plugs
- □Reconnect pump, filter, heater unions
- □Prime pump and check for leaks
- □Record clean filter pressure: ___ PSI
- □Verify multiport valve position
- □Check all valves are in correct position
Water
- □Fill to mid-skimmer level
- □Run circulation long enough to mix before testing
- □Test: FC, pH, TA, CH, CYA
- □Record opening baseline numbers
- □Do not add chemicals until the first mixed-water test supports the dose
After Circulation
- □Adjust pH first if needed
- □Add initial chlorine dose per calculator
- □Add CYA if below target
- □Wait 48h before retesting CYA after addition
Educational guidance only. Verify labels, manuals, local code, and site conditions before acting. Stop for electrical, gas, structural, drain, drowning, injury, emergency, or chemical-mixing risk.