GCTek AlphaONE LH Filter Low Head EcoFriendly Pond

Get Maximum Flow With the GCTek AlphaONE LH Filter

Tired of watching your pump work overtime and your electric bill climb just to push water through a high-restriction filter? Say hello to a better way. This filter delivers the lowest restriction of any filter made, so you can pair it with an energy efficient pump and still enjoy maximum flows with barely any head pressure. Your pond stays clean, your pump stays happy, and your wallet feels the difference.

• Low Restriction Design: Rated as the lowest restriction filter made, letting your pump run with barely any head pressure.
• Energy Savings: Pairs with energy efficient pumps to cut power draw and lower your electric bill.
• Five Sizes Available: Options range from ponds up to 2,500 gal to ponds up to 25,000 gal.
• Flow Rates: Handles anywhere from 3,000 GPH to 10,800 GPH depending on the size chosen.
• Footprint Varies by Size: Dimensions range from 19" x 31" up to 36.4" x 45", so measure your space before choosing.
• Clean Water Support: Keeps water moving at high volume for steady circulation and clearer results.
• Eco-Friendly Build: Designed for modern ponds that need strong filtration without the energy penalty.

Low Head Design for Energy Efficient Ponds

The "LH" stands for lower head, and that name earns its keep. Because water moves through with almost no resistance, your pump doesn't have to fight to keep your pond flowing. The unit features a black cylindrical tank topped with a black pump, fronted by a white PVC plumbing manifold with multiple valves and inlet/outlet ports for straightforward connection.

• Lowest restriction of any filter made, so flow stays strong from the first drop
• Works beautifully with the most energy efficient pumps you can buy
• Very little head pressure means your pump draws less power
• Real savings at the electric meter, month after month

It's an EcoFriendly choice built for modern day ponds, giving you clean water without the energy penalty.

Sized Right for Every Pond With the GCTek AlphaONE LH Pond Filter

Every pond is different, and this filter comes in five sizes so you never have to settle for too little or pay for too much. Match the model to your water volume and desired flow:

• AlphaONE LH 1.75 handles ponds up to 2,500 gal with flow up to 3,000 GPH
• AlphaONE LH 2.5 handles ponds up to 5,000 gal with flow up to 4,200 GPH
• AlphaONE LH 4.25 handles ponds up to 10,000 gal with flow up to 5,400 GPH
• AlphaONE LH 6.0 handles ponds up to 17,000 gal with flow up to 7,200 GPH
• AlphaONE LH 10 handles ponds up to 25,000 gal with flow up to 10,800 GPH

Clean Water Performance With the GCTek AlphaONE LH Biological Filter

Beautiful, healthy pond water starts with strong, steady filtration. This filter keeps water moving at high volume without choking your pump, which means better circulation and clearer water for your fish and plants.

• High flow rates keep your entire pond turning over efficiently
• Low head pressure protects your pump and supports consistent performance
• Sizing that scales all the way up to 25,000 gal ponds

Fitting the GCTek AlphaONE LH Low Head Filter to Your Space

Planning where your filter will sit matters, so each size carries its own footprint. Pick the model that fits your setup and your flow needs:

• AlphaONE LH 1.75: 19" x 31"
• AlphaONE LH 2.5: 21" x 34.5"
• AlphaONE LH 4.25: 24.5" x 35.5"
• AlphaONE LH 6.0: 30.4" x 40"
• AlphaONE LH 10: 36.4" x 45"

Product Specs

Product Attachments

GCTek AlphaONE LH Instructions