GCTek AlphaNano Pond Bead Filter System
The GCTek AlphaNano Pond Bead Filters use the same tanks, valves, pricing and sizing as the AlphaONE and AquaBead, filled with GC Tek's newest media. AlphaNANO media is about the size of BioGems beads but has the open-cell look of AlphaONE media, giving over 600 square feet of surface area per cubic foot for beneficial bacteria to grow and colonize. Pond professionals field-tested it for over a year, and one contractor compared it to a polishing filter that performs like the AlphaONE, because it does not slow down in flow the way a bead filter does.
• Three Versions: Standard, 3-Inch and X2.
• Sizes for Ponds up to 25,000 Gallons: 1.75 to 10.0 cu ft of media.
• Omnifuser Internals: No slotted pipe and no elbows inside. Water enters at the lowest point and exits at the highest, so the whole media bed does the work.
• 2 HP Media Agitator: Mounted below lid height on all side-mount filters.
• Built to Last: Double-layer fiberglass tank rated to 58 psi with a Lifetime warranty and a 1 year Customer Satisfaction Guarantee.
Which AlphaNano Pond Filter By GCTek Do I Need?
AlphaNano Standard
Side-mount multiport valve in 1.75, 2.50, 4.25, 6.0 and 10.0 cu ft.
AlphaNano 3-Inch (6.3 and 10.3)
The 6.0 and 10.0 cu ft filters with 3″ unions and a clear lid, for big flows and lower friction loss.
AlphaNano X2 (6.0 and 10.0)
Everything is doubled inside and out, so two energy-efficient pumps can run on one filter. GC Tek rates the X2 to filter a 20,000 to 25,000 gal pond on a total of only 5 amps. Uses one multiport valve and one set of 2″/2.5″ two-way valves.
GCTek AlphaNano Pond Filter System Sizing
| Size | Max Pond Size | Max Fish Load | Max Flow | Tank (Diameter × Height) |
| 1.75 cu ft | 2,500 gal | 90 lb | 50 GPM (3,000 GPH) | 19″ × 31″ |
| 2.50 cu ft | 5,000 gal | 125 lb | 70 GPM (4,200 GPH) | 21″ × 34.5″ |
| 4.25 cu ft | 10,000 gal | 225 lb | 90 GPM (5,400 GPH) | 24.5″ × 35.5″ |
| 6.0 cu ft | 17,000 gal | 300 lb | 120 GPM (7,200 GPH) | 30.4″ × 40″ |
| 10.0 cu ft | 25,000 gal | 500 lb | 180 GPM (10,800 GPH) | 36.4″ × 45″ |
The 3-Inch and X2 models use the same media volumes as the matching standard size.
Features on Every AlphaNano Pond Filter
- High-flow multiport valve with 2″ unions on every opening (3″ on 3-Inch models)
- Heavy-duty, rebuildable, unionized spring check valve with replaceable internals
- Pressure gauge that reads true tank pressure
- ALISS valve to keep media aerated with your air pump during a bypass or pump failure
- Large cleanable sight glass
- Clear lid with a 10″ opening (8″ on the 1.75)
- EZ Drain lets the water out, not the media
Before You Order a GCTek AlphaNano Pond Bead Filter
- Size the filter to your pond volume and fish load, not just gallons. Heavily stocked koi ponds should size up.
- Low Head (LH) versions are also available with AlphaNANO media. Contact us to order one.
- Comparing media? See the GC Tek AlphaONE with open-cell media and the GC Tek AquaBead with BioGems beads, in the same tanks at the same prices.
- Already own a bead filter? Ask us about AlphaNANO media conversion packages.
- Not sure which size fits your setup? Contact us with your pond size, pump and pipe size and we will help you choose.
Related Pond Filters
Browse the full GCTEK range, or compare these pond filters we also stock:
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