Bio-Health Nano Pods - These are where the bacteria go to live once they have left the main pod and are made up of a concrete weight with a tethered float on an adjustable rope and between the weight and the float are six porous blocks. The porous material is a perfect spot for the bacteria to live and reproduce away from the main pod. So the Nano Pods are satellites or "Condos" and are placed in the vicinity where you want the bacteria to consume muck or algae and really become the new home for the bacteria. Once installed for a little while, the Nano Pods become full of bacteria and are spread through-out the entire area that you want the system to work and this is where other prodcuts fail by not giving the bacteria anywhere to live. The Bio-Health Pod System includes 10 of these Nano Pods standard and others can be added.