wildroseofky
Aquarium Advice Addict
I installed my CO2 indicator three days ago. It went from dark blue to green in a couple of hours. Today it was green in the morning but jumped to yellow while I was out. Yellow is supposed to mean I have too much CO2. Tank inhabitants seem fine but I would feel safer with it back in the green zone. I slowed down the flow to 3 bubbles per minute. I did have it running without a bubble counter and the flow control wide open. Finally set up a bubble counter and reduced the flow to 3 bpm. This is a diy setup. I did a pwc and lowered the water level for more circulation. I also vacuumed the substrate with a battery powered vacuum that filters the water back into the tank. Neat little thing. The indicator has gotten lighter yellow. It was more dark tan. I only have another 2 hours of lights on. Should I go ahead and shut off the CO2?