AlphaONE 6.0 Filter from GCTek

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Model Size (cu. ft.) Max Pond Size Flow Rate (gpm) Fish Load (lbs.) Dimensions
AlphaONE 6.0 6.0 17,000 gallons (U.S.) up to 120 gpm 300 lbs. 30.4" x 40"

The AlphaONE filters were designed to be the most energy-efficient filters on the market. Inside is more than double the lateral surface area with the proprietary Omnifuser technology, where the upper AlphaBioONE media gathers around the slots in the Ommnifuser than that used on any other filter.

Reviews (4)

  • Overall rating:
Tom K.
August 8, 2025

Built solid. It’s been running since last fall and no problems so far.

John R.
April 27, 2025

Great unit. Keeps my koi pond clean even with a heavy load. Easy to backwash.

Kevin L.
March 7, 2024

This is my second AlphaONE filter, and the 6.0 is a big upgrade. I have a lot of fish, and it still keeps everything clear with very little effort. The ALISS system was a lifesaver when my pump stopped working overnight.

Mike D.
February 8, 2024

I run this filter on my 12,000-gallon pond, and it hasn’t let me down. The flow is powerful, and I barely have to mess with it. Backwashing is super easy. It’s clearly built for serious pond owners who want performance and less work.

Model Size (cu. ft.) Max Pond Size Flow Rate (gpm) Fish Load (lbs.) Dimensions
AlphaONE 6.0 6.0 17,000 gallons (U.S.) up to 120 gpm 300 lbs. 30.4" x 40"

The AlphaONE filters were designed to be the most energy-efficient filters on the market. Inside is more than double the lateral surface area with the proprietary Omnifuser technology, where the upper AlphaBioONE media gathers around the slots in the Ommnifuser than that used on any other filter.

Reviews (4)

  • Overall rating:
Tom K.
August 8, 2025

Built solid. It’s been running since last fall and no problems so far.

John R.
April 27, 2025

Great unit. Keeps my koi pond clean even with a heavy load. Easy to backwash.

Kevin L.
March 7, 2024

This is my second AlphaONE filter, and the 6.0 is a big upgrade. I have a lot of fish, and it still keeps everything clear with very little effort. The ALISS system was a lifesaver when my pump stopped working overnight.

Mike D.
February 8, 2024

I run this filter on my 12,000-gallon pond, and it hasn’t let me down. The flow is powerful, and I barely have to mess with it. Backwashing is super easy. It’s clearly built for serious pond owners who want performance and less work.

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