I have some 2-part mixing cartridges and nozzles on the way. I'm thinking of shooting polysorbate 80 liquid and 3% h202 together at treatment site. I have a large bottle left over from methanol blend testing. It should be thick enough to sink but sticky enough to stay on near-vertical surfaces long enough to oxidize the algae. Only problem is, all of the reef-safe delivery options are carbon sources so it's going to react with the peroxide and cause the skimmer to run wild. So, have to mix and dispense on-site. Whatever is in the nozzle is going to react. Short wave UV 295nm torching options are also on the list of R&D. 295nm UV is a major oxidizer compared to h2o2 so while it's a faster killer, it's also more dangerous to use in general. Like, you need glasses or you'll burn your retinas, kind of dangerous.