your enemy, don't know you you, i hate you. 5 cm aquarium stone aeration tank air pump large scale hydroponic oxygen

stone oxygen aerator for aquarium with fish tank air pump pond air pump hydroponic stone oxygen supply 2cm / 3cm / 4cm / 5cm characteristic: ozone aerated stone, bubble stone and super hard gold-plated steel sand are sintered at high temperature. they have good gas diffusion, filtration capacity, ozone resistance and corrosion resistance. it increases oxygen levels, reduces carbon dioxide, increases ph, and creates water flow it is an important tool for fish to survive in the process of resp