<Tr> <Td> Water temperature </Td> <Td> 25--28 ° C (77--82 ° F) </Td> </Tr> <Tr> <Td> Light intensity </Td> <Td> minimum 1500 lux (140 footcandles) </Td> </Tr> <Tr> <Td> Volume </Td> <Td> 2,500,000 L (550,000 imp gal; 660,000 US gal), assuming a nominal depth of 7000200000000000000 ♠ 2 m . <P> 2,500 m (88,000 cu ft) in cubic units . About 2 acre - feet . </P> </Td> </Tr> <P> 2,500 m (88,000 cu ft) in cubic units . About 2 acre - feet . </P>

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