The Replacement Canister is a perfect match for the JED Froggy Floating Chlorine Dispenser. If you need to replace your original chlorine dispenser, keep the whimsical froggy top and purchase a replacement canister. This product has all of the same features as the original canister, from punchable tabs to a screw-on bottom. These features make it easy to control the amount of chlorine dispensed in your pool. This replacement canister is also ideal for use as a brominator in a spa. If you plan to use the dispenser in your spa, add bromine to keep harmful bacteria from flourishing in the warm water.