Iíve planted my Cade 1500 Discus tank and have been doing a fishless cycle. Purchased an aqua medic 1000 reactor for the CO2 equipment. When first installed the aqua medic chamber was always full of water. Since a water change, every time I turn the CO2 on the reactor chamber drains of water and just has a continual flow through of water rather than being full of water. Have tried to research this but canít find an answer. New to planted tanks and CO2. Iíve bled the chamber of air a number of times but this ultimately makes no difference. Is this how the reactor is supposed to work? Cheers for any help in advance