These UltraZap biofilters come with bio balls included, so you get extra surface area for beneficial bacteria from day one — no separate media to buy. The bacteria convert harmful ammonia and nitrite into safer nitrates, keeping the pond balanced.

The range runs from a compact 5L chamber for small setups to a 50L unit for larger water volumes, and each suits garden ponds, koi systems, aquaculture tanks or large aquariums and fish tanks.

Good to know:
– Five sizes: 5L, 10L, 15L, 25L and 50L
– Bio balls included for immediate bacterial colonisation
– Ready-to-run biological filtration
– Compact, low-maintenance chamber
– Choose the size that matches your water volume