Do I need a pool cover pump?

Yes, if you have a solid cover and live somewhere it rains or snows. Standing water gets heavy fast, causing sagging, tearing, or swampy conditions. A $30–$80 pump saves you from siphoning or bucketing water off, and prevents cover collapse, debris stains, mosquitoes, and algae. Don’t buy the cheapest plastic one—spend a bit more for a decent warranty.