PondMAX Pre-Filter Sponge F300 - 300 x 120 x 120mm** Reptile and Amphibian Food Fertiliser laws require us to

Fertiliser laws require us to list potassium in terms of equivalence to a material that is not present (K2O) rather than the more scientifically sound method of simple elemental equivalence

add 1 teaspoon (5 ml) for each 190 litres of aquarium water

Pre-cut holes in the wire mesh top for heating and lighting accessories to fit neatly within the enclosure

which maintains humidity at optimum levels

and discoloration from aquarium water

PondMAX Pre-Filter Sponge F300 - 300 x 120 x 120mm** Reptile and Amphibian Food Fertiliser laws require us toDescription **This item is classed as a large, bulky or a heavy item additional delivery costs apply. Total delivery will be calculated at checkout. Pre filter sponges will adapt to a variety of pumps, saving you cleaning time. They also harbour beneficial bacteria and extend the life of your pump by reducing wear and tear. Features Ideal for pond & fountain pumps Provides mechanical & biological filtration for your pond Reduces pump maintenance