In order to nourish the soil of the plants you grow, it is not necessary to resort to expensive and strong detergents. This task can be completed by the most common household items that are in your hand.
Aquarium water for plants
If you have an aquarium you should consider using the waste water from the aquarium on your plants. When cleaning the aquarium, do not pour the water into the sink. Instead, use it to water your plants.
In addition to fish wastes and decaying fish food particles the water also contains nitrogen and phosphorus (which are a great natural fertilizer), helpful bacteria and trace nutrients that can help your plants thrive.
You can read more about this on davesgarden.com.
See also: Everything You Need To Know About Plant Nutrients
BONUS TIP: The cooled water in which you have cooked potatoes or pasta could serve you to water your potted flowers. The nutrients contained therein will nourish the soil.
