Ozone generator ozone generator ozone generator ozone generator ozone generator ozone generator ur store ur store is the only official store of eafrogs & Meikon and from the original factory. We will provide customers with quality guarantee and timely after-sales service. We will only be responsible for all the products in our store, but not other stores. ethylene ethylene ethylene ethylene ethylene enderwater ethonversion ethylene eonversion ethylene eount Videos or photos taken underwater without red filter are too blue or too green. Tici is enough red light within 10 meters deep water, so no filter is needed. This red filter is for use underwater 10 meters deep. Full color filters provide full color transition for a smooth blending effect. Gives your landscape and skin texture a more colorful touch. Creates dramatic contrast in outdoor photography when used with black and white film/Also works with color and infrared film. This filter is double threaded allowing additional filters to be screwed on top of each other. High quality metal and resin material. Xtremely strong and lightweight material . Ultrasonic ozone generator: This filter is compatible with all 67mm lenses . Check your lens thread size before ordering. Your camera's lens thread size will be listed somewhere on the lens barrel or printed under your lens cap. T, its number is always preceded by a diameter symbol. For example: lens thread size of ~67 = 67mm.