Sera Siporax Professional Product Option::500 ml 2-4 Drips per second -

2-4 Drips per second - for majority of other fish such as angels

It runs on 2 AAA batteries (included) with an easy-access battery compartment

stable suspension of very fine food particles for corals and filter feeding invertebrates in marine water

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Sera Siporax Professional Product Option::500 ml 2-4 Drips per second -Maximum optimization of biological filtration The original sera siporax Professional is suitable for use in both freshwater and marine aquariums as well as in ponds. Not depending on the kind of filter (internal external trickle filter), it maximizes the surface required for biological purification and provides the optimal substrate for the settling of necessary filter bacteria. The sera filter biostart included with the kit contains purification