Hobby natural air stone Vulcano. The Hobby natural air vent Vulcano is a true gem of an air vent in your aquarium. The lava stone not only supplies your aquarium with air, but is also very decorative. Each lava stone looks different and releases different numbers of air bubbles. Size: approx. 14x8x4cm

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Hobby Air Stone Mini-Long & Hobby air stone long-long. The Hobby air stones are suitable for all air pumps. Both air stones - Hobby Mini-Long & Hobby Long-Long – release a fine “veil” of air beads into the aquarium water. These air beads biologically clean the water from the smallest impurities and your aquarium and the water becomes crystal clear again. You can easily connect several mini-longs or long-longs together using simple plug-in technology, which further enhances the effect. Available in 2 sizesMini-Long 3x12.5cmLong-Long 3x25cm

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