Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
Still not sure? Call (818) 818-6559 and we'll find it for you.
HASA Algi Control Concentrate | 32oz | 72121
Pickup, delivery and shipping times are estimates, not guarantees.
Couldn't load pickup availability
Have a question about this part?
Ask about fit, specs or shipping and get an instant answer.
Goes with this part
CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
HASA Algi-Control Concentrate 72121 is a 32oz potent algaecide formulated to combat and prevent the growth of yellow and green algae in swimming pools. This concentrated solution can be added directly to the pool water or through the circulation system, with optimal results achieved by targeting areas most affected by algae and around the pool's perimeter. It is compatible with most common pool maintenance chemicals; however, it should not be mixed directly with high concentrations of chlorine or other oxidizers.
Initial Application:
- Thoroughly clean filter cartridges or backwash D.E. filter.
- Vacuum algae debris and thoroughly brush the pool.
- Add 26 ounces of Algi-Control Concentrate for every 50,000 gallons of water.
- Filter for 5-6 hours.
- Vacuum pool after 24 hours to remove dead algae.
- If algae is still visible, repeat steps 3 through 5 until pool is free of visible algae.
- Once algae are under control, clean the filter and return to normal operation.
Maintenance Application:
Add 6.5 ounces of Algi-Control Concentrate in 50,000 gallons of water every 3-5 days or as needed.
Booster Application:
Add 6.5 ounces of Algi-Control Concentrate for every 50,000 gallons following heavy or prolonged rainfall or when there is a heavy bathing load.
Vacation Treatment:
- Add 4.8oz. of Algi-Control Concentrate per 10,000 gallons of water for every week unattended.
- If treating with a chlorinating shock, apply Algi-Control Concentrate on opposite ends of the pool.