Doesn't work. There will be a secondary surge in population of grazing zooplankton and predatory zooplankton. All comes to naught. Unless perhaps you do a prediction of which zooplankton species will surge in population, and do a pre-emptive spraying of viruses and phages to wipe out the grazing zooplanktons.

We have already done extensive cycling on the membranes. The algae forms a layer on top but it doesn't impact performance. We have cycled the membranes 30 times which is equivalent to 1 year of use in the ocean. We are repeating more tests, but these particular membranes have already been through some pretty severe testing required for spaceflight and other food processing applications. I'm not how you can make such statements without knowing what kind of materials that we are using.

In response to your other concern, we are not using Botryoccocus Braunii, it grows too slowly.