A couple of things. First, there is no algae, they are living microorganisms. Both MD and JF work to breakdown sludge and particulates which does include microbial contaminants. On the Biobor MD spec sheet located at https://www.biobor.com/Biobor-Resources/spec-sheets/SPEC-BioborMD.pdf it specifically states,
"Sludge dispersants break up and dissolve fuel sediment sludge into small enough particles that will pass harmlessly through filters and injectors, enabling your fuel system to operate at peak efficiency with properly atomized fuel spray. BioborMD® cleans fuel systems to allows the engine to produce its designed optimum horsepower and torque, further increasing economy."
Biobor JF, while not a sludge dispersant, it does breakdown microbial biomass or biosludge. Biomass is made up of microorganisms and their acidic byproducts. When Biobor JF kills the microbes, the biomass breaks apart, some of which is dissolved, some of which is captured by your filter if the biomass is in large quantity.
As far as lubricity, if you use Biobor JF, there is no reason to use another lubricity additive. Biobor JF adds lubricity, exceeding the ASTM standard for engine efficiency, adding protection to your engine. See the Biobor JF spec sheet at https://www.biobor.com/Biobor-Resources/spec-sheets/SPEC-BioborJF-NEW.pdf . Hope this helps. Thanks for the comments and questions.