BC, again great info . I did not intend to imply that bacteria only grow on plant surfaces. In fact, I think the ones that are most beneficial are the ones consuming organic muck (that's decaying leaves, fish waste, etc. burgmeister and yes you can call me WW)in the benthic layer. I was just pointing out that in a new pond, there typically isn't a lot of surface area, organic or inorganic, for bacteria to attach to. And, bacterial treatments will be more effective with increased surface area regardless of its nature.
What I like about plants as a bacterial growth media is that the plant itself has a relatively large surface area when compared to other objects. That is, you could probably cover an entire softball sized rock with the leaves off one sprig of elodea. Plus the leaves are two sided therefore doubling the surface area. Furthermore, plants will come and provide their services whether you like it or not which, in my mind is the definition of sustainability...but I digress.
The point being Coach, IMO it's too early for a bacteria program.
