Bio media

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Hozelock Kaldnes Media refill - 5 Ltr bag.

5 Litre bag of k3 bio media, either top up or replace base media in filter. Massive surface area for growing beneficial bacteria.Top Tip- We recommend topping up your bioforce to boost overall performance. fits neatly underneath your filter foams.
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Evolution Aqua Kaldnes K1 Media 25 litres

Super biological media

Kaldnes Moving Bed process, which has been scientifically tried and tested in fish farming and waste water treatment for over 10 years, is now available for fish keepers and is exclusively distributed worldwide by Evolution Aqua.

The media is engineered in a wheel shape and is slightly positively bouyant. This allows a small amount of water flow to circulate the media throughout the vessel. This flow is created with your air pump and air stones or diffuser etc