Subject: What are some things I can add to water to promote algae growth?

   What I mean is things such as the type of water - whether it be 
distilled water, tap water, etc. Also whether heat would be adequate or 
would it kill the algae culture. Pehaps soil or sand would be efficient.  
These are generally the things I am trying to get at. I am attempting to 
grow spirogyra, which is an algae culture, for a research project. This is 
why I am trying to get this information.  

Re: What are some things I can add to water to promote algae growth?