LEADER ECOSUB 410/420 (no float switch) water pump Juwel Aquarium The directions say use one

The directions say use one unit for 5 to 40 gallons

Power Type : D Battery x 2

Technical specifications:

measure the calcium concentration and add as required to maintain the concentration between 410 and 450 mg/L (ppm)

LEADER ECOSUB 410/420 (no float switch) water pump Juwel Aquarium The directions say use oneFeatures: Anti corrosive and rust proof materials Wear resistant shaft and impeller Best use fully underwater Can use be in pond. Made in Italy Ecosub 410 Multi purpose Submersible Pump Rated power: 280W Maximum head 7 m Maximum delivery 140 L m (8500L h) Low suction capability 10mm Output size 1 14 Maximum particles size 5 mm Dimension 14 x 14 x 26. 7 Weight 3. 9 kg Ecosub 420 Multi purpose Submersible Pump Rated power: 750W Maximum head 9 m Maximum