| Pond Spec and challenge Zoo aquarium staff researched the market during visits to trade shows and eventually paid a visit to Evolution Aqua to see the Nexus in action and to discuss requirements. It seemed the Nexus system offered everything to fulfill the requirements, particularly given by the fact that its design caters for the husbandry of large ornamental carp and the main species for the zoo’s new exhibit are very similar to Koi. Holding 5,000 gallons of water, the pond has two bottom drains that gravity feed two Nexus Eazy 300’s. Sequence 12,000 pumps return the water to the pond via a uv and in-line heater. There are in excess of 50 fishes in the pond when you include all the algae grazing catishes. The main exhibit fishes are all Asian and include Arowana, Probarbus, Clown loaches and Torpedo barbs, which, with the exception of the Arowana, are all cyprinids. Cyprinid is the scientific name given to carps and minnows and, as such, these fishes are related to Koi and, therefore, have very similar requirements to Koi. In fact the very large Probarbus are so similar to Koi, even in appearance, there requirements are pretty much identicle. As you can imagine, water quality is paramount to these fish and as the pond is on public display with a large viewing window, excellent clarity is also required! One thing big fish need is a large amount of food! 
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