Semiter Acrylic self-start Overflow Box, Fish Tank Overflow Box, Siphon Hang On Overflow Box for Fish Tank Aquarium

【Aquarium Filters】---The outlet pipe has check valve, can be pumped through the attached syringe, quickly exhaust the inside of the first overflow box, easy to start the overflow box. 【Aquarium Filters】---The outlet pipe has check valve, can be pumped through the attached syringe, quickly exhaust the inside of the first overflow box, easy to start the overflow box. 【Aquarium Filters】---The outlet pipe has check valve, can be pumped through the attached syringe, quickly exhaust the inside of the first overflow box, easy to start the overflow box. 【Aquarium Filter Accessories】---Suitable for fish tank, aquarium. 【Overflow Pre-Filter】---With movable cover at the overflow box outlet, effectively reduces noise and prevents debris from entering the overflow box. 【Overflow Box】---Made of highgrade acrylic material, beautiful and durable, high light transmittance. 【Fish Tank Filter】---With overflow box guide comb, can make the water evenly dispersed, and can prevent fish, aquatic plants and other debris into the overflow box.