We do not clean natural ponds or lakes whereas an aquarium or a swimming pool needs to be cleaned regularly.…
We do not clean natural ponds or lakes whereas an aquarium or a swimming pool needs to be cleaned regularly. Why ?
Solution
Ponds or lakes have natural cleansing agents like microbes which clean the ponds or lakes. whereas an aquarium or a swimming pool is an artificial/man-made ecosystem and do not have decomposers.
If we do not clean the aquarium regularly the waste material will go on increasing which is harmful for fishes and aquatic plants.