Firsle STC Sand Filter With Pump are commonly used in water purification equipment such as swimming pools, hot springs, fish ponds, and landscape pools. It combines the functions of a sand tank filter and a circulating water pump, effectively removing impurities, suspended solids, organic matter, etc. in the water through circulating filtration, thereby maintaining the clarity and hygiene of the water body. The working principle of the sand tank water pump integrated machine (Firsle suction machine) is mainly to extract water from the water body through the water pump, and then filter it through the sand tank filter. The sand tank is filled with specific specifications of quartz sand. When water flows through, the quartz sand will adsorb and intercept impurities and particles in the water. The filtered water is then pumped back into the water body, forming a cyclic filtration process. The advantages of the sand tank water pump integrated machine (suction machine) include compact structure, small footprint, easy installation, and good filtration effect. At the same time, it can also be customized according to the different needs of the water body to meet the usage requirements of different occasions.