Natural Chemistry Pool First Aid, 2 L Bottle | 13122NCM Natural Chemistry Pool First Aid, 2 L Bottle | 13122NCM. This product offers a range of features such as Cleans pool of dead algae, pollen, oils, spills, anti-freeze residue, paint, vandalism and other forms of non-living organic water contamination, Frees clogged filters of oil and other forms of non-living organic buildup, Removes dead algae quickly and efficiently, in many cases without the need to backwash. Technical specifications and specific features include: Weight: 5.52 kg. Features and Benefits: Cleans pool of dead algae, pollen, oils, spills, anti-freeze residue, paint, vandalism and other forms of non-living organic water contamination Frees clogged filters of oil and other forms of non-living organic buildup Removes dead algae quickly and efficiently, in many cases without the need to backwash Technical Specifications & Specific Features: Weight: 5.52 kg