FishCrazyBenBOMB
Aquarium Advice Addict
What is the point of using the upside down bottle?
It seems like any container that is roughly the right size would do just fine, and perhaps even be more stable.
You don't have to use a bottle, it's just a cheap way to get a container if you don't have one. There are also hatcheries you can build with bottles aswell, to insure everything gets sturred up and such.
But yeah, you don't have to use a upside down bottle, it's just cheap. I do mine in a small glass jar I had laying around and it works fine.