The Marina Mini Aeration Kit allows you to ensure you have fresh oxygen in even the smallest tanks. It includes a small Marina air pump, a 6.5cm air stone, and also 1m of airline tubing. These simply slot together, place the air stone in the tank, and allow a beautiful flow of bubbles to sooth you, and your fish.
For larger tanks, there is the Marina 200 Aeration Kit, which is designed for tanks up to 225l. This inclues a Marina 200 Air pump, a 6" Air Stone, a 3" circular bubble disk, and also 6m of tubing, and 2 check valves, which mean the air cannot travel the wrong direct, adding a safety feature to the equipment.