Randy Holmes-Farley
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Reef Chemistry Question of the Day #72
While most of us live close enough to sea level that there is little impact of altitude on our reefs, some of us live at high enough altitude that certain processes are impacted.
One of the most readily understood processes is the reduced availability of oxygen at high altitude.
One way to possibly counteract the reduced oxygen levels at high altitude is to keep the aquarium at cooler temperatures to allow more oxygen to dissolve into the water.
Compared to a reef aquarium at sea level and at 25 deg C (77 deg F), what temperature would you need to keep the reef at to exactly offset the reduced oxygen level at 5,000 feet above sea level? 10,000 feet?
A. 23 deg C (73 deg F) at 5,000 feet and 21 deg C (70 deg F) at 10,000 feet
B. 21 deg C (70 deg F) at 5,000 feet and 17 deg C (63 deg F) at 10,000 feet
C. 19 deg C (66 deg F) at 5,000 feet and 13 deg C (55 deg F) at 10,000 feet
D. 16 deg C (61 deg F) at 5,000 feet and 7 deg C (45 deg F) at 10,000 feet
Please consider only the change in oxygen levels due to temperature and altitude, not any change that may result from changes to the metabolic processes of the creatures as a function of temperature.
Good luck!
.
While most of us live close enough to sea level that there is little impact of altitude on our reefs, some of us live at high enough altitude that certain processes are impacted.
One of the most readily understood processes is the reduced availability of oxygen at high altitude.
One way to possibly counteract the reduced oxygen levels at high altitude is to keep the aquarium at cooler temperatures to allow more oxygen to dissolve into the water.
Compared to a reef aquarium at sea level and at 25 deg C (77 deg F), what temperature would you need to keep the reef at to exactly offset the reduced oxygen level at 5,000 feet above sea level? 10,000 feet?
A. 23 deg C (73 deg F) at 5,000 feet and 21 deg C (70 deg F) at 10,000 feet
B. 21 deg C (70 deg F) at 5,000 feet and 17 deg C (63 deg F) at 10,000 feet
C. 19 deg C (66 deg F) at 5,000 feet and 13 deg C (55 deg F) at 10,000 feet
D. 16 deg C (61 deg F) at 5,000 feet and 7 deg C (45 deg F) at 10,000 feet
Please consider only the change in oxygen levels due to temperature and altitude, not any change that may result from changes to the metabolic processes of the creatures as a function of temperature.
Good luck!
.