If l run co2 for three months and decide to stop running co2 . Will this stoping harm my plants? 55 gallon. Full of plants

If its just straight plants in the tank it will most definitely slow the growth . I assume you have fish in said tank so it wont harm them, just will slow down the growth you have been getting. My 55 has 14 plants in it with a low stock atm of fish i stopped co2 for 1 month so far plants are still growing. I have deep root plants stem plants and rhizome plants . So from my experience you would be fine, just less growth

Thanks..I have seen films when your co2 runs out and you have been gone for a week and your plants are starting to melt. Don't understand. I have ten anglefish young and getting more baby's..veil anglefish.