Evolution Aqua K1 Moving Bed Filter Media 25L / 50L
K1 Moving bed filter media from Evolution Aqua.
25L / 50L bag delivered in an unopened Evolution Aqua bag.
Choose amount required from dropdown
How it works
Maturing the Kaldnes bio-media is important because a delicate eco-system is naturally developing for the bacteria involved in the nitrification process.
Kaldnes media provides the maximum active surface area for the bacteria to colonise, more than other types of static media. It is this process which removes harmful ammonia and nitrite from the water.
How it is different to other media
As the Kaldnes media moves within the filter, it causes the old dead bacteria on the outside to be displaced. This makes space for new younger heavier feeding bacteria to rapidly colonise.
Within the wheel is a protected surface which enables colonies of bacteria to naturally follow their lifecycle, of maturing, dying and then fueling the latter stages of the nitrification cycle.
Kaldnes has been designed to provide the best possible habitat for both young and mature beneficial bacterial colonies.
What is meant by 'self-cleaning'?
Unlike foam, matting, or other forms of static filtration media, the Kaldnes K1 media is designed to move freely within your filter.
The constant chaotic movement of the air from your pump, causes the media to self-clean and thus requires no maintenance.
This allows the filter to reach optimum effectiveness without the disturbance of periodic cleaning, avoiding unnecessary loss of bacteria within the filter.
50 Litres of K1 media will handle up to 250 grams of food per day
K1 total surface area: 800M2
K1 Total protected surface: 500M2
- High performance pond & aquarium filter media
- Provides a large protected surface area
- K1 is designed to house beneficial bacterial colonies
- Original Evolution Aqua product
Pre-orders are shipped once we have the stock available and will be shipped using the service chosen at checkout.
All services are working day services and do not include delivery on Saturdays and Sundays or public holidays as standard. Deliveries are usually Monday to Friday only, although some Royal Mail items may be delivered on weekends as standard if the service is available in your area.
|Royal Mail (2-3 days)||£0.00-£49.99||£2.99|
|Royal Mail Next Day (1-2 days)||£0.00-£49.99||£4.99|
|Parcelforce 24 (1 day)||£0.00-£49.99||£7.99|
|Parcelforce 24 (1 day)||£50 and up||FREE|
|Pallets (booked in)||aquariums / bulky items|
Pallets Standard (3-5 days)
Pallets Express (1-2 days)
|*EXCLUDED ITEMS||extra delivery fees apply:|
|Fibreglass Ponds (booked in)|
Zone 1 (7-10 days)
|Zone 2 (7-14 days)||-||£149.99|
|Zone 3 (7-21 days)||-||£249.99|
|Pond Plants (direct from grower)
|All pond plants (3-10 days)||one-off fee regardless of order size/value||£5.99|
Please see our full delivery information page and terms and conditions for detailed information on shipping policies and zones