boxtech Aquarium Marine Test, Sea Saltwater Hydrometer, Reef Ocean Hydrometer Salinity Meter for Pool Aquarium Water…

【Quick Water Change】Only two valves and a long hose are needed to quickly complete the water change of the fish tank, and use the pressure of tap water to drain water. This semi-automatic water changer is suitable for medium and large fish tanks. 【No Buckets, No Spill, No Noise】Easy to install and simple operation, no bucket required, the dirty water in the fish tank is drawn out under the pressure of tap water, After the drain is completed, just switch the valve to add water. 【Gravel Cleaning】 The 16.5inch long cleaning tube has a built-in filter. When draining, gently agitate the gravel to remove the debris. It will not make noise and the fish will not be disturbed.

🐠【Sand Washing and Droppings Cleaning】This aquarium gravel cleaner is automatic electric operation which saves time and effort than manual operation. It is your ideal choice. The fish tank siphon can be used to remove any uneaten food, detritus and droppings that are trapped in the gravel which can be fatal to aquarium inhabitants if not removed. The power cord of this vacuum cleaner is 197 inchs long and the hose is 81.5 inchs long, which greatly increases your convenience. 🐠【Electric Working Principle】The greater suction power of the all-copper motor in this aquarium gravel cleaner which is used with impeller supercharging technology. Please remember you need to completely submerge the motor in the water first, then press and hold the start button, the impeller starts to perform a powerful work for your fish tank. If your fish tank is relatively small, when the motor is turned on, you can also take out the submerged motor from water to work. 🐠【Filtering and Water Changing Function】Using the filter housing of this gravel vacuum for aquarium , you can drain clean water directly back to the water tank. The filter material can be cleaned and used multiple times, or it can be replaced with other filter materials. Using a water pipe, water flows directly from the water tank. You can also replace and add water. It is safe to use, equipped with an external independent switch, the adapter is DC 24V, and the power supply is UL certified.