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| Aquatic Ecosystem (Square) Within the unit, four distinct habitats (see inset) form a self-supporting, leak-proof wetland ecosystem that you and your students create. As the habitat grows, observe the dynamics of natural systems, study plant and animal relationships,and even add a small amount of waste to the system to see how pollution affects nature! Start the Aquatic Ecosystem with plants, animals, and gravel from local environments. We also offer a redeemable coupon for a Starter Kit (pondwater, mud, and aquatic plants), and gravel if not available locally. Made of durable 1/4" acrylic, the 24"x24"x12" high tank is easy to set up and fits on a sturdy tabletop. Includes a UL-listed air pump, tubing, fittings, instruction manual, and sample lesson plans. In the inset illustration above, the waste from one cell feeds the next. 3/8" gravel is integral to the functioning of the system (2/3 cu ft needed).
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