GCTek WattMizer KoiKeeper Filter Systems
The GCTek WattMizer KoiKeeper Pond Filter System is a complete, pre-plumbed koi pond filter built to keep both the purchase price and the electric bill low. GC Tek pairs your choice of AlphaONE, AquaBead or AlphaNANO filter with an energy-efficient Artesian2 low RPM pump and a 316 stainless steel NishikigoiUV-H80 UV, all mounted on one 36″ × 48″ pad. It is built for the thrift-conscious koi keeper and for areas on tiered electric rates where every watt counts.
• Three Sizes: WattMizer2.5K, 5K and 10K for ponds up to 2,500, 5,000 and 10,000 gallons.
• Low-Watt Artesian2 Pumps: 320, 440 or 630 watts depending on size, with a 3 year warranty.
• NishikigoiUV-H80: 80 watt Amalgam UV in Marine grade 316 stainless steel, standard on systems ordered from 6.1.26.
• Your Choice of Media: AlphaONE, AquaBead or AlphaNANO filter in the matching size.
• Pre-Plumbed on One Pad: Every system arrives mounted on a 36″ W × 48″ D pad.
Which WattMizer KoiKeeper Filter System By GCTek Fits Your Pond?
WattMizer2.5K
For ponds up to 2,500 gallons. 1.75 size AlphaONE, AquaBead or AlphaNANO filter with a 1/4 HP Artesian2 pump at 320 watts.
WattMizer5K
For ponds up to 5,000 gallons. 2.5 size filter with a 1/3 HP Artesian2 pump at 440 watts.
WattMizer10K
For ponds up to 10,000 gallons. 4.25 size filter with a 1/2 HP Artesian2 pump at 630 watts.
WattMizer KoiKeeper Filter System Sizing
| Model | Max Pond Size | Filter Size | Max Fish Load | Artesian2 Pump | UV | Pad (W × D) |
| WattMizer2.5K | 2,500 gal | 1.75 cu ft | 90 lb | 1/4 HP, 320 W | NishikigoiUV-H80, 80 W | 36″ × 48″ |
| WattMizer5K | 5,000 gal | 2.50 cu ft | 125 lb | 1/3 HP, 440 W | NishikigoiUV-H80, 80 W | 36″ × 48″ |
| WattMizer10K | 10,000 gal | 4.25 cu ft | 225 lb | 1/2 HP, 630 W | NishikigoiUV-H80, 80 W | 36″ × 48″ |
Fish load figures are GC Tek's ratings for the matching AlphaONE, AquaBead or AlphaNANO filter size. Photos may show the earlier UV; systems now ship with the NishikigoiUV-H80.
What Comes With the GCTek WattMizer KoiKeeper Pond Filter
- AlphaONE, AquaBead or AlphaNANO filter (your choice) in the matching size
- Artesian2 low RPM energy-efficient pump with a 3 year warranty
- NishikigoiUV-H80 316 stainless steel UV with a single 80 watt Amalgam lamp
- All components pre-plumbed on a 36″ W × 48″ D pad
- 2″ unions at the connections for easy setup and removal
- Lifetime warranty on the UV vessel (rubber parts excluded)
Before You Order a WattMizer KoiKeeper Filter System
- Size by pond gallons and fish load. A heavily stocked koi pond should step up a size.
- KoiKeeper systems are sold as-is with no options. Need a prefilter, a different pump or a bigger UV? Look at the WattMizer PLUS system instead.
- Plan for a level spot about 36″ × 48″ near the pond.
- Not sure which size fits? Contact us with your pond gallons, fish load and pipe size and we will help you choose.
Related Pond Filter Systems
Browse the full GCTEK range, or compare these pond filter systems we also stock:
- FREE Shipping via FEDEX, LTL Ground, & UPS. Ships in 2-3 Business Days.
- Ships Only to Lower 48 States of the United States
Recommended for you
GCTek WattMizer KoiKeeper Pond Filter System Reviews
