Keep pool water sparkling for 30 days with Miraclear Pool Clarifier Tab. This super concentrated gel tab is easy to use and will not affect water chemistry. The non-toxic and biodegradable formula will remove stain-causing metals and undissolved particles. Simply drop this ultra-concentrated tab into the pump strainer basket. There is nothing to mix or measure and no mess. With regular use, the tab will improve filter efficiency and ultimately reduce chlorine usage. It’s easy to have crystal clear pool water, effortlessly!