Why Leslie's 3 inch pool chlorine tablets? All our chlorine tabs are pro-grade quality to control all types of pool algae, bacteria, germs, and parasites for cleaner, healthier water. Product packaging may vary, with no change to product composition or weight.

20 lbs bucket of stabilized chlorinating tablets for swimming pools
Controls all types of pool algae, bacteria, and other disease-causing organisms
Long-lasting, slow dissolve tab for even and consistent sanitization
Built-in protection against sunlight to shield against chlorine burn off
No fillers, glues, or binders for more effective sanitization
99% trichlor active ingredient, 90% available chlorine -- the strongest available

Leslie's - 3 in. Jumbo Chlorine Pool Tabs - 20 lbs. Bucket