Start of DSB construction. I start with 5 cm bottom layer of siporax in the DSB chamber. Siporax is a product of the German brand Sera and consists of sintered glass, very porous. Ideal for bacteria growth according to Sera but IMO these pores will be overgrown of bacteria film rather fast. However the ring structure create a lot of tunnels back and forward – ideal for sedimentation. That’s the main reason why I will have them as a bottom layer in my DSB
Sincerely Lasse
Sincerely Lasse