[PowermanKW]

Thanks Aurora.

This is what I mean by leaching......

That one, these polymers do not breakdown in saltwater at all. Which seems to be the case. Bacteria is need to break the chains and "degrade" it. So that is cool.

while bacteria can break it down to it's final form.. 100% consumption... I think of leaching as the bacteria breaking off chains and then those are released to the water column to be further degraded. I mean is 100% of the carbon consumed on the pellet surface by the bacteria with no escape of usable carbon? My guess is that it is small, but understandable if some gets away.

It would seem to me that aggressive tumbling would allow more carbon to get away and as a result some of the increased skimmer out put being seen with some pellets may very well be more carbon chains and not just bacteria.