Suitable for freshwater? saltwater/reef aquariums and hydroponic use.<br />Increase oxygen levels and PH? lower CO2.<br />An important instrument to successfully keep aquatic fish for respiration process.<br />Durable? washable and sintered by high temperature? different from other air stones.<br />Great bubble release and good anti-corrosion.<br />Creates water currents and dazzling underwater scenes.<br />Great aquarium supply for aquarium or fish tank.<br />Look no further? buy it now!<br />Diameter: 4cm<br />Thickness: 1.5cm<br />Color: gray<br />Suitable for 30-60cm aquarium (about 30cm water depth : 2W oxygen pump is advisable; over 40cm water depth: 4W oxygen pump is advisable<br />1 x Air stone<br />In original package<br /><img src="//agdetail.image-gmkt.com/m430/009/301/842301009/img/agdetail.image-gmkt.com/009/301/842301009/img/img6.eachbuyer.com/x7/p45/v402_1.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/009/301/842301009/img/agdetail.image-gmkt.com/009/301/842301009/img/img6.eachbuyer.com/x7/p45/v402_2.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/009/301/842301009/img/agdetail.image-gmkt.com/009/301/842301009/img/img6.eachbuyer.com/x7/p45/v402_3.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/009/301/842301009/img/agdetail.image-gmkt.com/009/301/842301009/img/img6.eachbuyer.com/x7/p45/v402_4.jpg" />