No.
We do not introduce anything into the water. It's technically illegal for us to broadcast any nutrients or anything in the water. All of our species rely on filtering natural algal blooms out of the water column. The biggest negative perception with our activities is loss of gear, as I mentioned, in storm events, loss of trays or things like that. A lot of that has been mitigated with better designed equipment and the banning of polystyrene and things like that in our rafts.