Infusoria is a mixture of tiny, usually single-celled organisms like algae and Paramecium. It’s a wonderful food, and you can make it at short notice at home.to grow it, you’ll need a jar (clear in colour) some tank water (or flower vase water if you have some handy) some kitchen scraps and a windowsill.
Half to three-quarter fill the jar with aquarium water (never use untreated tapwater for this — the chlorine is present to stop the likes of infusoria from growing). Into that place a generous slice of cabbage, lettuce, courgette, sprout, spinach, or whatever else you have. I’ve always used leafy greens with good effect.
Pop a piece of cloth on the top of the jar and seal with an elastic band, and place the jar somewhere bright but not in direct sunlight (I’d just end up with a green jar when I did). I always used an obscured kitchen windowsill.
Over the next few days the water in the jar will turn cloudy. This is a bacterial bloom, and entirely necessary to the process. Your infusoria is not yet ready, though! The jar may become a little stinky at this point.
After seven or eight days, the water in the jar will clear, or sometimes turn a pink colour. This is a surefire sign that infusoria has started to grow and is using the bacteria bloom as a food source.
Look in to the jar and at this point you should see a fine, moving dust. That’s your infusoria, ready to go! Add as much as is needed with a pipette, and use this culture to help kickstart other cultures.
This water will be teeming with tiny live food in just a few days.