No more measuring. No more handling messy, harmful chemicals. CuLator is a powder chelator conveniently packaged in individual flow-through bags. Simply place a CuLator bag in your pool or spa skimmer...that’s it! After one month, remove the used, biodegradable CuLator bag and throw it away with regular household trash. Replace with a fresh CuLator bag to keep your pool or spa metal-free. Scroll to the bottom of the page to see a video of this product in action!