| No, no, thank you Rob : )
We have close to 30 commonly used aquaculture strains for sale, including Isochrysis (tahiatian strain) and Nanno oculata. Our strains for the most part were taken from successful aquaculture projects, cleaned up through the use of antibiotics and then selection off of nutrient agar plates. They are clean but I would not say axenic (without bacteria).
Maurauder, one can culture both spp together but you won't get the "performance" of a monocultured effort. I have been around cultures that were a mixture and one spp would overgrow/outcompete the other. In short, one can do it but I do not recommend it. | 
