Sera Siporax Pro 500ml Filter Media Rings SaltwaterAdditions It is not necessary

It is not necessary

commonly abbreviated as dKH

re-test nitrate and phosphate concentrations

the Duetto is the perfect ATO for your aquarium

Sera Siporax Pro 500ml Filter Media Rings SaltwaterAdditions It is not necessaryMaximum optimization of biological filtration. The original Sera Siporax Professional 15mm is suitable for use in both freshwater and marine aquariums as well as in ponds. Regardless of the kind of filter (internal external trickle filter), Siporax Professional filter media maximizes the surface required for biological purification and provides the optimal substrate for the settling of necessary filter bacteria. Filter and breakdown processes in the