I thought that Is what that was but the aquarium threw me off. Odd since my setup is similar, too shelf phyto, second shelf aquarium with adult brine shrimp, bottom shelf copepods lol
If you are placing an order with FAF, the micro algea grow and disk should be all you need. They do sell starter kits that come with rigid airline and stuff but it's. It really necessary. You can get an extra disk and keep in the fridge for 6 months in case of a crash, but one should. E enough
Just start one culture, when you split it, start the second, when they split you can start the third and forth
If you are in a hurry you can start multiple 2 liter cultures from more than one disk