Zapp Pure High Intensity Ultraviolet Clarifiers from GCTek
Zapp Pure High Intensity Ultraviolet Clarifiers from GCTek
Click to enlarge image(s)
This high performance Zapp Pure ultraviolet clarifier from GC Tek is designed to work with low amperage pumps and high flow filters, such as the AlphaONE or AquaBead. These high performance, high intensity units utilize 70,000+ microwatts of algae-killing power.
  • Made of high grade 316 stainless steel (whereas most UVs are made of 304)
  • Adjustable pressure switch for automatic on/off as flow demands
  • LeakTite quartz sleeve fitting is all stainless (no plastic)
  • Higher grade electronic ballasts for long life
  • Clear union for easy lamp observation
  • Can be mounted horizontally or vertically
  • Polished inside for maximum effect
  • Auto shutoff overload protected
Additional Features for Multi-Lamp Clarifiers (ZP-80.3 and MegaZapp):
  • Each lamp has its own indicator 
  • Each lamp has its own switch to vary intensity as necessary
  • Lifetime warranty on 6" vessel
  • Two year warranty on ballast, one year warranty on lamps

Model Vessel
Pond Size
Flow Rate
ZP-5 4" ZP-5 6,600 gallons 2200gph 2" 23"
ZP-10 4" ZP-10 12,000 gallons 4000gph 2" 32"
ZP-20 4" ZP-20 18,000 gallons 6000gph 2" 43"
ZP-40 4" ZP-40 25,000 gallons 7800gph 2" 52"
ZP-40.3 4" ZP-40 25,000 gallons 7800gph 3" 52"
ZP-80.3 6" 2 x ZP-40 39,600 gallons 13200gph 3"
MegaZapp 6" 4 x ZP-40 49,000 gallons* 16350gph* 3"

*Values based on specifications (details not provided by manufacturer)

GC Tek products are not eligible for order discounts. Adding GC Tek products to your order will void coupons used on that order.
Body Diameter 4"
Warranty (Lamp) 1 Year
Warranty (Unit) 5 Years