Evolution Aqua Tempest Filter System – High-Performance Polishing & Biological Filtration for Crystal-Clear Ponds
The Evolution Aqua Tempest Filter System is another standout innovation from the multi-award-winning U.K. manufacturer Evolution Aqua—a brand with nearly twenty years of expertise in delivering market-leading pond filtration.
If your goal is cleaner, clearer, beautifully “polished” water, the Tempest steps up like a champ and gets it done.
 
Advanced Filtration Powered by K+ Media
At the heart of the Tempest system is Evolution Aqua’s legendary K+ Biomedia, engineered to offer massive surface area for beneficial aerobic bacteria.
When water is pumped upward through the Tempest, the 7 litres of K+ Media compress toward the top of the chamber, forming a natural mechanical barrier.
Fine particles? Trapped.
Sediment? Locked down.
Water clarity? Next level.
This compression effect means the Tempest works as both a biological powerhouse and a precision mechanical polisher.
 
Versatile Install Options – Use It Your Way
The Tempest is built to fit into almost any pond setup, making it extremely adaptable:
Polishing Filter after a gravity-fed system like the Nexus+
Standalone Filter for smaller ponds
Additional Filtration on ponds with existing systems
Multi-Unit Configuration – run several Tempests from a single pump for boosted clarity
Whether you’re upgrading, expanding, or starting small and tidy, the Tempest is that reliable helper every pond owner appreciates.
 
Fast & Easy Cleaning – Zero Fuss
Keeping the Tempest clean is refreshingly simple:
Close the supplied solvent-weld slide valves
Open the waste gate valve
As the water drains, the air inlet opens automatically—agitating the media and lifting off trapped debris
Once empty, pop off the top cap and rinse with a hose
It’s quick, clean, and doesn’t require full disassembly… because nobody has time for that.
 
Straightforward Installation
The Tempest is designed with solid mounting and dependable plumbing in mind:
Inlet & Outlet: 1½" imperial / 50mm metric solvent-weld fittings
Connect the included slide valves using solvent-weld adhesive
Optional hose-tail kit available for flexible pipework
Supplied with two mounting clips—install onto a surface capable of supporting up to 30kg when full
Setup stays tidy, secure, and ready for long-term use.
 
Technical Specifications
Inlet Connection: 1½" imperial / 50mm metric solvent weld
Outlet Connection: 1½" imperial / 50mm metric solvent weld
Maximum Flow Rate: 7,500 L/h (5,000 L/h optimum)
Filter Volume: 27 litres
Waste Outlet: 32mm hose tail
Biomedia Included: 7L K+ Media
 
Why Pond Owners Love the Tempest
Exceptional water-polishing results
Boosts filtration without major system changes
Ideal add-on for Nexus+ gravity-fed setups
Compact, efficient, and incredibly easy to maintain
Built by Evolution Aqua—a global leader in pond filtration