Anti- Freeze

My new experiment will be that the recycled antifreeze will effect the environment less than regular anti-freeze.
Anti-freeze is a substance that lowers the freezing point in an engine, and a compound that removes ice, or prevents it from forming. However it causes serious damage to the environment and in the experiment I want to perform, I will be testing Recycled Antifreeze with other regular antifreeze products and assess the damage on grass.

My Experimental Variable is:
The growth of the grass

My Controlled Variable:
The different antifreeze used as well as water, sunlight and soil.

The Water, sunlight and soil will be added to help with the growth of each plant.

My experiment will be done in a course of 24 days and will be repeated 2-3 times.