I have stored rainwater for my plants in plastic jugs so that I don't run out during the winter. I just opened a jug and noticed some algae growing in the water.
How can I rid myself of the algae? Would adding a small amount of bleach be useful? If so, how much per gallon or liter, and how long should the water sit before I use it to water my plants?
Any other suggestions?
Thank you and have a great New Year,