Elite Airline Tubing is designed for use in all fresh water and saltwater environments by novice as well as experienced aquarium enthusiasts. It is safe from the effects of ozone gas and ultra-violet rays. Elite Airline Tubing is a great alternative to silicone tubing. It is super soft, non-whitening, long-lasting and has a super thick wall. These qualities give superior kink resistance. It is available in crystal clear and aquatic green that are easily disguised in most aquarium décor. Additionally, it is offered in three separate lengths in each color. Clear 8 foot (14750); 20 foot (14751); 500 foot (14752). Aquatic Green 8 foot (14755); 20 foot (14756)