Material: Made of clear glass, strong and durable, highly transparent and easy to clean, a great aquarium accessory. Permeable Holes: The hole at the bottom of the cup promotes water circulation water and absorbs more oxygen, which is beneficial for the production of aquatic plants. Technical data: the diameter is approx. 6 cm and the height approx. 7cm The tilted design has a positive effect on light absorption and promotes photosynthesis. STRONG SUCTION CUP - Double suction cup design, the aquarium glass flowerpot can be firmly hung on the wall. ‘aquarium. You don’t have to worry about it falling off the wall of the aquarium. Practical decoration: can be used to grow small aquatic plants to increase the oxygen content or as a plant pot food.