for nostoc we can use chu 10 medium with low level of microelements in the composition of medium and for phytoplankton we can prepare synthetic ocean or pond water by adding trace elements in it. and for macroalga calcium chloride ,sodium bicarbonate and some trace elements we can add to prepare the artificial medium for seaweeds that is macroalgae.

For Nostoc many labs use Bg11 (see e.g. http://microbiology.ucdavis.edu/meeks/BG11medium.html). Fot phytoplankton the media depens on the species you want to grow (freshwater, marine etc).

Hi

for culltuer cyanobacteria you can use BG-11 and BG11-0 medium

The best resource for algal growth media is "Algal Culturing Techniques," a book by Robert Andersen. If you're going to do any serious algal culture work I highly recommend buying a copy.

I already use BG11 and failed it, I will try with BG11-0 and CHU-10.

I have mantained a culture of a symbiont Nostoc and many different cultures of microalgae (Bacillariophyta, Chlorophyta and Charophyta) on CHU10 medium.