First of all, you have too much veg in the jar. Also having the lid on it Is probably not going to help. If you're worried about flies or other creatures getting into the culture, just put a mesh over top of Jar. your culture will probably take two weeks To break down and get established. Also Collins method will work well. For me, it's too much faffing about. infusoria are in almost every aquarium when i start up a culture. I get it established within six days. All you need is a jar of aquarium water. Green water will Help speed the process up 1, Add a very small piece of aquatic plant to water. 2, If you don't have plans add a small piece of algae. 3, Or add a small amount of gunk from fish tank filter, Whichever method is used, add a small amount of Brewers yeast Mix water with yeast turn to liquid Then add two pipet of liquid to culture,