Two approaches to the algaebioreactor
1. Sterile, expensive, but more understandable monocultures
2. Non-sterile "ecosystems" of wild algae which can be very stable and productive, or the opposite...
Two fundamentally different ways of cultivating the algae
Algae farming is a relatively new field altough the research here is more that 50 years old (Hawaii).
Basically there are two ways to go here: The first is to have a very clean system with strictly defined algae species there. So you have got most of the control in the process - you get a monoculture which can produce great results. However, if some contamination occurs, then you've got problems. Without clean conditions, well skilled team and high-tech equipment you can't achieve it. All this requires a considerable starting investment.
The other way is to find a stable algae "ecosystem". You need a "team" of algae and other (micro)organisms which together form a "community" that grows well in your environment repelling damaging "intruders". As there exist forests that grow well in tropics and other forests which grow well in the Arctic, the same is true for algae "forests". You just need to discover the right "algae community" which might already grow in the water pond behind your home! By finding the right algae composition, the right nutritional substances and the right physical conditions (light, temperature etc.) you have your own stable algae bioreactor. It is of course your invention and your property. The algaeHunter (or AlgaeNet) community will only help you to make money of it.