I've had my pool for 9 years. This is the first year that I've had this fast swimming, oval shaped black bug. Anyone know what they are or how to get rid of them? They tend to swim in circles and stay in the same area of the pool.
I've had my pool for 9 years. This is the first year that I've had this fast swimming, oval shaped black bug. Anyone know what they are or how to get rid of them? They tend to swim in circles and stay in the same area of the pool.
AG 7600 gallons, sand filter, 1.5 HP Hayward pump (1 speed), K-2006 test kit
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