Your lights are fine as long as water isn't splashing onto the bulbs. I'm confused about the CO2 question though. Why would you need to take off the bubble counter? And why would doing that kill the plants?
I was gettin bubbles in the counter but not coming through the diffuser/airstone
so I took it off and now it's comin through the diffuser/airstone in the tank. I tried so many times an only one time it came through fully but then over flowed into the counter I poured out some of the mix an all the water in the counter refilled the counter and then nothing so I did the same mix an didn't include the counter. I was worried the alcohol it creates would kill the plants.