In the bottom of the base use a small amount of hot glue to secure the air pump and transformer. In the design of this base you will notice gaps at the back of the reactor. This is for airflow and cooling. The lighting tube puts out a mild amount of heat and we only need convection to cool the main algae reactor chamber. To accomplish this make sure to drill holes in the base and tops to allow for airflow. You can see the long cord attached to the transformer that will go to the top end of the bulb.

Now onto the air fittings. Our air pump has two outlets on it so we needed to combine them with a simple Y hose. If your pump has a single line out then don’t bother with this step. But note the check valve and direction of flow.

Next up install the tube onto the top of the base. Feed the air line through a hole in the top of the base into the base and attach it to the air feed tubes.

Here is a closer view of the configuration. You can see at the bottom of the tube the wires attached to the connection for the bulbs and the wires going to the top of the tube.

Here is the assembled top of the reactor. We have some extra hose just coming out of the top and you can see the electrical connection are made.