No it’s still on. there are bubbles in the system but very small almost can’t see with naked eye when using Wooden air stone. If I use my ceramic one you can see them much better but guide says to use wooden
Im on Day 6 now and watching my pH very closely. So far no losses of aquatic life. But, I ended up using 2 wooden airstone directly next to my return pump intake but with minimal air flow out of the airstones in order to keep the bubbles very tiny. This created a "smokey" air bubble flow shooting throughout the tank. In the lower flow areas, you can see really small barely visible bubbles suspended in the water column. I have one fire shrimp that seems to be doing great so far... but im through the worst of the CO2 phase now. I would guess you just need a little more bubble flow to push more oxygen to counteract the CO2 increase.