It's a lot easier than you think. At the beginning it was hard as hell, because some plants weren't established and lower leaves would die, decay, and ruin my pH and water quality. So back then I would always be taking out dead leaves, but now I just do water changes with my python system. I can't let the water level drop too low though, otherwise the plants collapse and the fish can't swim around As for the gravel, I don't vacuum it at all, there very few spots where it's possible anyways!