Marina air stone is ideal for adding accents in any aquarium the air stone diffuses air, creating water movement. The air stone also increases surface agitation, accelerates oxygen replenishment and helps release
Marina airline tubing is safe and dependable for use with air stones, air-actuated ornaments and air-driven filters. Designed to fit all standard outlets, the tubing will remain supple and retain its shape. Size: 3 m
Marina Battery Air Pump, Provides auxiliary air when main air source fails, Reliable back-up air source during household electrical power failure, Portable aerator for fish in transit, with air stone/18in tubing, Use
Marina Check Valve prevents water from siphoning out of the aquarium through the air hose and into the air pump in the event of a power failure or when removing filters and other air-driven accessories from the aqu
Precision air table, for studying With the elastic and inelastic collisions, linear and angular momentum, conservation of momentum, moment of inertia, centripetal force, simple and complex harmonic motion. Size 700x500 mm with adjustable feet
Plank Tow Net 12in Standard 153 Mu, Ideal for horizontal or vertical tows in fresh or salt water. The larger size is good for salt water and large, clear lakes, Large tow net is 300 x 1050mm (12 x 42), lines attac
Marina air stone is ideal for adding accents in any aquarium the air stone diffuses air, creating water movement, increases surface agitation, accelerates oxygen replenishment, release carbon dioxide build-up, Rec
Marina airline tubing is safe and dependable for use with air stones, air-actuated ornaments and air-driven filters. Designed to fit all standard outlets, the tubing will remain supple and retain its shape. Size:
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