What do I look for in microscope? I bought nice one but still learning what I’m looking atYes for organic carbon not inert carbon like in reactors. Example got cheap one day dosed a bottle of tonic water in experiment not realizing it had high fructose corn syrup in it (carbon source). 1 day later snot for 3 weeks straight. (dont ask haha) It does kind of look like fungus to me though. Kind of stringy and has a mycelium look to it. Can't be sure without a microscope.