I’ve recently installed a diy baking suda + citric acid co2 system to my 30litre tank. Everything seems just fine but there is one problem that i am getting. The co2 injected into my tank isn’t going around the tank, but only going up and evaporating into the atmosphere. Right now i have it infront of the outflow of my filter, and it does push the bubbles around the tank, but only a little bit. Any suggestions?