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GCTek AlphaONE Pond Filter Energy Efficient Omnifuser Media

SKU AO1.75
Original price $2,239.95 - Original price $4,279.95
Original price
$2,239.95
$2,239.95 - $4,279.95
Current price $2,239.95
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Cut Your Pumping Costs With the GCTek AlphaONE Pond Filter

Tired of watching your energy bill climb just to keep your pond clean and clear? The AlphaONE was built from the ground up to sip power while pushing serious water. Inside sits more than double the lateral surface area of any other filter, where media gather around the slots in the exclusive Omnifuser. Pair that with the highest flow 2" multiport valve available and you get a filter that keeps your water pristine without punishing your wallet.

  • Media Surface Area: More than double the lateral surface area versus other filters, thanks to the Omnifuser design.
  • Valve: Highest flow 2" multiport valve on the market for moving more water with less resistance.
  • Pond Sizes: Five models covering ponds from 2,500 gal up to 25,000 gal.
  • Flow Ratings: Maximum flow ranges from 3,000 GPH to 10,800 GPH depending on the model.
  • Fish Load: Supports fish loads from 90 lbs up to 500 lbs depending on the model selected.
  • Pressure Gauge: Reads 0 to 60 PSI with a BAR scale, marked with Clean Filter and Start indicators for easy monitoring.
  • Media Agitator: Built-in 2 HP agitator included on every model.
  • Valve Feature: ALISS valve equipped across the lineup.
  • Viewing Access: Huge sight glass and clear lid on every model for checking filter status inside.
  • Connections: Unions on every connection point for straightforward maintenance.
  • Warranty: Limited lifetime warranty on the filter body.

Energy Efficient Filtration Built Into the GCTek AlphaONE Filter System

What sets this filter apart lives inside the tank. The Omnifuser spreads media around its slots to create more than double the lateral surface area found in competing filters. More surface area means more room for biological colonies to establish and more contact between your water and the media that cleans it. As a stand-alone biomechanical filtration solution, it saves time, saves energy, and saves money while it helps protect your koi.

The payoff for you:

  • Lower running costs thanks to a design centered on energy efficiency
  • The highest flow 2" multiport valve on the market for moving more water with less resistance
  • Performance tuned to match your exact expectations for a clean, healthy pond

How the GCTek AlphaONE Pressurized Filter Handles Every Pond Size

Five models span backyard water gardens up to large koi ponds, so you can match the filter to your water volume and flow rate. Each unit pairs a maximum pond capacity with a maximum flow rating and a compact footprint.

  • AlphaONE 1.75 handles ponds up to 2,500 gal at 3,000 GPH, measuring 19" x 31"
  • AlphaONE 2.5 handles ponds up to 5,000 gal at 4,200 GPH, measuring 21" x 34.5"
  • AlphaONE 4.25 handles ponds up to 10,000 gal at 5,400 GPH, measuring 24.5" x 36.5"
  • AlphaONE 6.0 handles ponds up to 17,000 gal at 7,200 GPH, measuring 30.5" x 40", supporting fish loads up to 300 lbs
  • AlphaONE 10.0 handles ponds up to 25,000 gal at 10,800 GPH, measuring 36.5" x 45"

Keep This GCTek AlphaONE Biological Filter Working at Its Best

The media inside gathers around the Omnifuser slots to host the beneficial bacteria that break down waste and keep your water balanced. With more than double the lateral surface area of ordinary filters, this design gives those colonies plenty of room to thrive and process the fish load your pond carries.

Combined with the high flow multiport valve, the filter moves water through the media efficiently, so your pond stays clear while the biological process runs quietly in the background.


Monitoring Filter Pressure

Round gauge on the GCTek AlphaONE Pond Filter reads 0 to 60 PSI and BAR with Clean Filter and Start marks.

The pressure gauge on the AlphaONE takes the guesswork out of upkeep. This round gauge features a black bezel and a white dial that reads from 0 to 60 PSI with a secondary BAR scale, and the rim is marked with Clean Filter and Start indicators.

A quick glance tells you exactly where you stand:

  • Watch the needle climb as media collects debris
  • Backwash when the reading reaches the Clean Filter mark
  • Return to the Start zone once flow is restored

AlphaONE 1.75 Specifications and Features

GCTek AlphaONE Pond Filter panel for the 1.75 unit highlights lifetime warranty and ALISS valve.

Built for ponds up to 2,500 gallons and fish loads up to 90 lbs, the 1.75 packs a full set of features into a 19" x 31" body:

  • Limited lifetime warranty on the filter body
  • 2 HP media agitator
  • ALISS valve equipped
  • Huge sight glass for easy checks
  • Unions on every connection
  • Clear lid for viewing inside

AlphaONE 2.5 Specifications and Features

Feature callout for the GCTek AlphaONE 2.5 listing lifetime body warranty, huge sight glass, clear lid and unions on every connection

Stepping up to ponds as large as 5,000 gallons and fish loads up to 125 lbs, the 2.5 measures 21" x 34.5" and carries the same trusted feature set:

  • Limited lifetime warranty on the filter body
  • 2 HP media agitator
  • ALISS valve equipped
  • Huge sight glass
  • Unions on every connection
  • Clear lid for viewing

AlphaONE 4.25 Specifications and Features

Feature callout for the GCTek AlphaONE 4.25 listing lifetime body warranty, huge sight glass, clear lid and unions on every connection

Sized for ponds up to 10,000 gallons and fish loads up to 225 lbs, the 4.25 fills a 24.5" x 36.5" footprint and keeps every convenience intact:

  • Limited lifetime warranty on the filter body
  • 2 HP media agitator
  • ALISS valve equipped
  • Huge sight glass
  • Unions on every connection
  • Clear lid for viewing

AlphaONE 10.0 Specifications and Features

Checklist for the 10.0 model lists warranty and ALISS valve details for the GCTek AlphaONE Pressurized Filter.

The largest of the line takes on ponds up to 25,000 gallons and fish loads up to 500 lbs within a 36.5" x 45" body, matched to a maximum flow of 10,800 GPH:

  • Limited lifetime warranty on the filter body
  • 2 HP media agitator
  • ALISS valve equipped
  • Huge sight glass
  • Unions on every connection
  • Clear lid for viewing

Product Specs

Spec Value
Brand GCTek
Type Pond Filter
Available Models 1.75, 2.5, 4.25, 6.0, 10.0
Max Pond Capacity 2,500 / 5,000 / 10,000 / 17,000 / 25,000 gal
Max Flow 3,000 / 4,200 / 5,400 / 7,200 / 10,800 GPH
Dimensions 19" x 31" (1.75) / 21" x 34.5" (2.5) / 24.5" x 36.5" (4.25) / 30.5" x 40" (6.0) / 36.5" x 45" (10.0)
Valve High flow 2" multiport valve
Media Housing Exclusive Omnifuser

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