We originally had CO2 going into our sump and the CO2 wasn't going in the water long enough. Leigh built a cylinder that has the air stone in the bottom and incoming water coming in from the top (left). This makes the bubbles move up through the water against the current and this air bubbles stay in the water longer. Since this change everything has started to come together and after the CO2 cylinders arrived we have started to circulate the water with CO2 from the sump into the whole system.
I'm excited to see how this experiment will go and looking forward to help get it going. The experiment should start this week if we get the CO2 meter fixed and I will post a new blog about it soon.