Floc Tabs. (Aluminium Sulphate). The size of this product is 12x tubes and there are 10 tablets within each tube. Wow what a deal! Sparkle tabs are ideal for putting that sparkle back into your pool water. If your pool is becoming cloudy simply add the required amount to a skimmer or pump strainer basket (first ensuring that no other chemicalis are there first) and allow the filtration to run for 48 hours to polish up the pool water. Then backwash the sand filter before resuming normal filtration. Always read and adhere to the instructions on the pack and never directly mix chemicals. Don't forget, the price you see is the price you pay not a penny more. We sell chemicals cheap, not cheap chemicals!