this is amazing!!! I will explore it in more detail later. But as far as I understand now algae are doing the same "job" worldwide in rivers, ponds, swamps. and an idea of this product is to place them in the places we need this "filter" - urban ares. It's interesting that maybe we could even get except for O2 also some other products (photosynthesis results in O2 and glucose (usually)). excellent! thanks for sharing )
PS: Maybe the link you've placed in More info: is not correct because after following it I've got "Simple and fast URL shortener!" or I've got something wrong.