GCTek PoliGlassBead XStream Polishing Filter
The GCTek PoliGlassBead XStream Polishing Pond Filter goes after the fine particles your main filter lets through. It uses two types of media: a layer of AlphaBio2 media pre-separates the larger solids as water flows down, then a deep bed of PoliGlassBeads gives a super-fine polish, filtering down to 3 microns. GC Tek uses true glass beads instead of crushed glass, because glass beads do not bond together the way crushed glass does, so backwashing stays easy. It is designed as a polishing filter only and is not intended as a stand-alone filter.
• Filters Down to 3 Microns: The glass bead bed polishes out the fines that leave water hazy.
• Two Media Layers: AlphaBio2 for pre-separating larger solids, PoliGlassBeads for the final polish.
• Six Sizes: For ponds up to 5,000, 10,000, 17,000 and 30,000 gallons, plus 3″ versions of the 17K and 30K.
• Blowers Below the Lid: Since 2024 the blowers sit below the top of the filter, so the lid is now the highest point.
• Tested in a 10,000 Gallon Pond: GC Tek ran a PoliGlassBead5K, half the suggested size, on its test pond. By day 3 the water was clear at 6′ and the bottom drain was easily visible.
Which PoliGlassBead XStream Polishing Pond Filter By GCTek Do I Need?
PoliGlassBead 2″ Models (5K, 10K, 17K, 30K)
The standard PoliGlassBead filters for ponds up to 5,000, 10,000, 17,000 or 30,000 gallons.
PoliGlassBead 3″ Models (17.3K, 30.3K)
3″ versions of the 17K and 30K for ponds up to 17,000 and 30,000 gallons, for systems plumbed in 3″.
PoliGlassBead XStream Polishing Pond Filter Sizing
| Model | Max Pond Size | Connections |
| PoliGlassBead5K | 5,000 gal | 2″ |
| PoliGlassBead10K | 10,000 gal | 2″ |
| PoliGlassBead17K | 17,000 gal | 2″ |
| PoliGlassBead30K | 30,000 gal | 2″ |
| PoliGlassBead17.3K | 17,000 gal | 3″ |
| PoliGlassBead30.3K | 30,000 gal | 3″ |
Features on Every GCTek PoliGlassBead Polishing Pond Filter
- AlphaBio2 media layer for pre-separating larger solids
- True glass bead PoliGlassBead media for the final polish
- 2 HP Media Agitator for backwashing
- Extra-large sight glass
- 8″ clear lid to check the media
- Tank rated to 58 psi with unionized ports on every opening
Before You Order a GCTek PoliGlassBead Polishing Pond Filter
- Pick the model rated for your pond volume in gallons.
- This is a polishing filter only. Run it after a main mechanical and biological filter such as the GC Tek AlphaONE or GC Tek AquaBead.
- GC Tek recommends plumbing it as the last item in the system with a 3 way valve, so you can divert water through it whenever you want a super polish. You can also run water through it all the time.
- Ordering a GC Tek PLUS or Mashimizu system? Add the PoliGlassBead at the time of order and GC Tek can plumb it into the system.
- Not sure which size fits your setup? Contact us with your pond size, pump and pipe size and we will help you choose.
- FREE Shipping via FEDEX, LTL Ground, & UPS. Ships in 2-3 Business Days.
- Ships Only to Lower 48 States of the United States
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