Blue Thumb Carbon Clear Activated Carbon, 5 Pounds Microbe-Lift also known as a pitless

also known as a pitless adaptor in the 2 inch size only

it is available HERE but you must provide the serial number of your Ultima unit

560-D0A60S Gray

the built-in direct bypass system allows the rainwater to be diverted to the overflow system

Blue Thumb Carbon Clear Activated Carbon, 5 Pounds Microbe-Lift also known as a pitlessBlue Thumb Carbon Clear is a bituminous coal exposed to extreme heat, which "activates" the carbon giving it a powerful ability to absorb chemical pollutants. The billions of pores within the carbon act as hundreds of sponges soaking in many pond pollutants such as tannin, ammonia, nitrite, and nitrate. The result is a polished, healthy environment. Includes mesh application bag Safe to use around aquatic life Treats up to 2,000 gallons