The water instantly comes out Great airbag with high suction, slowly press the airbag and release it to fill the tube Full of water, just a few steps easy to complement instant water. Food grade silicone tube Using a high quality, non-toxic and odorless food silicone tube, without aquatic organisms injury, Safe use. Quick jack connector Quickly install the acrylic tube, insert it directly and press the blue part during disassembly The hard acrylic tube can be withdrawn by dividing it. Powerful suction cushion Large high suction airbag, slowly press the airbag and release it to fill the tube Full of Water, just a few easy steps to complement instant water. Instructions for use In a few simple steps, you can make a quick water change The first step: put the tube hard in the Water from the aquarium and press the water outlet with your hand to avoid air leaks. Step 2: Press the airbag to evacuate the air into the tube, then loosen the air cushion, the water will be poured into the airbag.