Hello there,
I can deliver the growing effect as seen in the video, I'll do it in Blender with fluid simulation and export it for Unity as an alembic file with a custom material that has colors exposed so you can change the colors as you wish. I'm used to that since I am a professional game developer, and have been for the past decade!
I assume you are talking about the animation that starts at 1:36 in the youtube video? When the foam really grows out of the tube as the chemical reaction happens? and it would last about 40 seconds until the big cloud of foam goes back down?
Let me know if you want me to take that project, I'll work fast and efficient, and I love science so I'll do my research too!
Cheers, and have a good day
Regards