Hi there and welcome to Science Buddies!
What makes a project "good" depends on many different factors.
- Are you passionate about the project and the issue you're experimenting with?
- Do you have (or can you easily obtain) the neccessary tools and materials to make the project work?
- Do you truly understand the background science for your project?
- Is it creative and did you have fun??
If you answered yes, then sounds like you're in a really good spot!
Your idea sounds neat, but in order to get this up and running, you'll need to expand on it a little.
In order for a project to be "science fair material", it needs to follow certain steps and include certain components. In order for you to bend your project into form, here's a link I highly suggest reading. Please let me know if you understand everything in the link or if you need help clarifying certain parts:
https://www.sciencebuddies.org/science- ... ience-fair
Within the link, there are sub-links that you'll need to click, and I recommend starting from the very top and working your way down.
As far as pH goes, here's a little video to get you thinking about your "background" section:
https://www.youtube.com/watch?v=t5eUOXm-wiE
Let me know how it goes and when you're ready to discuss the next step of your project,
formulating a hypothesis.
Best of luck and stay nerdy!!
lmp1341