Oh yeah I don't want to disuade an open source movement. People just need to be aware.
I'll give you an example from the 70's in the US. It's going to be a vauge example so bare with me.
Somebody started to manufacture and sell or try to sell a device that would close the the "vent" (manifold) from a forced air natural gas furnace to let's say the rest of the house, the furnace being used to heat a home. This thing would keep some of the heat from escaping the "core" of the furnace while it was not "lit". Thus trapping heat in that "core".
Once the burners kicked in this flew would open again. Trapping the heat while not in use meant the fan that forces the heat would kick in sooner thus reducing the burn time and require less natural gas. What ever federal government agency that regulates the saftey of home furnaces delgated determning if this was safe to an industry association.
I forget the name of the association. You would think it would be paid for and run by people that manufacture heating systems or fire departments or something. Nope it was made up from experts from the natural gas producers and untilities that brought it your home.
Ok I know I use a lot of quotes but don't quote me on this but I think it was the Carter adminstration that made these devices legal to use. I think they are standard if not mandatory on natural gas furnaces. I'm pretty sure it was the attorney general that took these people to court to make these things legal to use. The Attorney General has that $2 million.
Once again bare with me. Let's say we figure out an effective PBR. Let's say we all agree that the algae will not live long outside the PBR. Let's say everyone but 70 scientist have proof that if the algae escape they will at worse make your lawn greener with no harmful effect to the enviroment.
Mark my words. Environmental groups and scientist that have a knack for getting into the media and scaring people will make it difficult for you to own and operate your own PBR. They will say things like "We spend millions to keep this algae out your drinking water." They will be well funded, Not by Green Peace, not by the Boy Scouts. They will be funded by people that don't want you making your own fuel.
They will tell you energy is dangerous stuff best left to professionals. The fellas always get their cut. You mess with their lively hood they will mess with yours.