I also have be waiting for algae but had got to the point I could dive for the sunken piece of the gong. I accidentally grabbed the master farmer had him eat the no breath stew and put him in the lagoon. Instead of diving for the piece he caught an algae eating fish and didn't think about it until later. Will it keep the algae from forming? Or will the disappear do to no algae? Never Mind just kept putting villagers in the water to fish and after a bit algae. One thing tha don't toell you is that it may take more than one.