Air pump accessory for aquariums
At night an air pump with air stone is an advantage for the aquarium because plants without light don’t produce oxygen, but continue to consume it. In thinly planted aquariums the air pump with air stone supplies the necessary water circulation. In aquariums with dense planting the air pump provides the aquarium with oxygen at night, since the number of plants means the oxygen concentration can drop to a dangerous level. When disease is present in the aquarium the air pump increases the oxygen level in the water, which is essential for many medications.
Connect the air stone to the hose of the air pump (not included), place the air stone inside the pond or aquarium. The own weight of the air stone keeps it on the ground.