HQUA PAS20, Instruction Manual

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General Information
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2.4 Initial Start-up & Seasonal Operation
The circulation of poor quality, low oxygen, deep water to the pond’s surface can
introduce harmful gases and by-products into the previously healthy upper regions of
the water column. These by-products can make the upper regions unfit for aquatic
life and could result in fish-kill.
We suggest the customer initial Start-Up procedure to prevent fish-kill No matter what
kind of pond you have. Or anytime system has been shut-off for an extended period of
time.
Start-Up Procedure:
Day 1: Run system for 30 minutes; turn system off for remainder of day.
Day 2: Run system for 1 hour; turn system off for remainder of day.
Day 3: Run system for 2 hours; turn system off for remainder of day.
Day 4: Run system for 4 hours; turn system off for remainder of day.
Day 5: Run system for 8 hours; turn system off for remainder of day.
Day 6: Run system for 16 hours; turn system off for remainder of day.
Day 7: Begin running system 24 hours/day, 7 days/week.
Summer Operation
To reduce the risk of fish kills in hot summer months and for optimum aeration benefits,
HQUA PAS20 Aeration Systems should run continuously throughout the summer.
Winter Operation
Owner assumes all responsibility for operating HQUA PAS20 Aeration System during
winter months. Operating in freezing conditions on an ice-covered pond will cause large
open water areas at diffuser sites. Ice thickness around open areas will be much thinner
than the surrounding areas. HQUA strongly recommends that “Danger - Thin Ice” be
posted at frequent intervals around pond.
If you choose to turn your system off for the winter, do the following:
• Unplug your aeration system.