How does acid rain affect the growth of aquatic plant?

Much as the acidity in the soil effects the amount of nutrients a plant will absorb. The same holds true with aquatic plants.

What makes a difference is if the water becomes to acidic for the existing aquatic plants or fish.

You can adjust both water and soil to the right ph for the best enviroment but it up to you to test the water and adjust the ph.

You will have to research your plants and wildlifes requirements to keep it right. The ph level can be affected by acid rain so check and adjust.

Good Luck