If stack change didn't work for you with Containers (like watercontainer,gascontainer etc)

Follow these steps:

1: Make sure you empty the whole container ( also turn it off if it's connected to a switch/button)

2: When container is EMPTY, Pick the container up. It should now be in your inventory.

3 Now place it back down, and you can connect everything up again.

4: Now the stack change should been added, and everything should be working fine.

Enjoy :)