I have a Reef Octopus CR-100.
The instructions aren't very clear and detailed, but there are 4 diagrams in the instruction sheet. The diagrams are practically the same but one has labels.
There are 4 tubes that are connected to the reactor:
air vent pipe
CO2 check valve / CO2 intake hose
water supply hose
Which tubes are meant to be in
the water, and which tubes are meant to pump out
I think the air vent pipe sits outside the tank and the water supply hose sits inside my minireef submerged in the water.
I've tried many variations but can't seem to get it working. When I turn the system on, the water doesn't flow out of any tubes.
Any help would be appreciated.