Dymax Black Bio Sponge Filtration Micro processor base to control

Micro processor base to control brightness of blue and white light

Magnesium helps to stabilize the correct combination of calcium alkalinity and pH values

Reptile safe

Also includes colour enhancers for vibrant red

Dymax Black Bio Sponge Filtration Micro processor base to controlDymax Bio Sponge is made of quality non toxic material for both biological and mechanical filtration. Enhances good water quality as a filter media as a site for beneficial bacteria, and efficient as a mechanical filter medium (trapping loose particles of debris). Suitable for both freshwater and marine aquarium. Can be washed and re used (rinse in tank water not tap water to maintain its use as a biological filter).