Will baking soda kill nostoc?

Baking soda may help control nostoc but is unlikely to completely kill it. Baking soda works by raising the pH of the soil, which can make the environment less favorable for nostoc growth. It can prevent the spread of the algae, but it is not as effective as stronger chemicals like vinegar or bleach. For complete eradication, physical removal followed by chemical or more potent natural treatments may be necessary.