Top Aqua Slim Filters Replacement Cartridges Model:HF120 (2 Pack) 0 is used to quickly

0 is used to quickly and accurately measure the pH of pond water to prevent harmful effects from water that is too alkaline or too acidic

API ACCU-CLEAR water clarifier does not act as a healing treatment for fish like aquarium salt

Antioxidants and prebiotics help support whole body health

and phosphates

Top Aqua Slim Filters Replacement Cartridges Model:HF120 (2 Pack) 0 is used to quicklyTop Aqua Slim Hang On Back Filters Replacement Cartridges Top Aqua Slim Filters Replacement Cartridges are used to replace worn filter cartridges in Top Aqua V HF Filters to maintain optimal efficacy and water quality for aquatic life. Spare Filter Cartridges for the Top Aqua V HF Filters are available in a double pack each consisting of 2 filter cartridges. It's important to regularly change the filter cartridges in your hang on filter to ensure