You should be developing your community, not maintaining it.
Spend your time bonding your online community. This isn’t the same as fire-fighting. It’s not resolving disputes, responding to queries or deleting bad posts. It’s proactively doing things that make members feel a greater sense of community.
Make members feel they are in your community. Create boundaries and rituals to follow. Focus on developing some rewards for members who participate. Give each member a chance to influence the community, no matter how small that influence might be. Hold events and highlight issues that provoke emotional connections.
This is the really, really, important stuff. Do the maintenance later.