Miami Reef
Clam Fanatic
Imagine this: Your tank lights are currently in their “actinic” or dusk period. You enjoy the aquarium during the mornings at, let’s say, 460nm (blue) because of the coral’s fluorescence.
You calibrate your refractometer with that aquarium light with a standard solution of 35ppt or a refractive index of 1.3394 (seawater salinity). The aquarium reads 35ppt.
Later that afternoon, your power and aquarium light go out. The entire house is pitch black, and the only light you have is an incandescent light, which, for this purpose, shines about 650nm (orange).
You calibrated the refractometer earlier this morning with the blue light. You recheck the aquarium salinity to ensure everything is still OK.
Because of the difference in light from the calibration time from the morning (blue light) to checking it now (orange light), the current salinity reading has:
A) Fallen slightly lower from the morning.
B) Risen slightly higher from the morning.
C) Fallen drastically from the morning.
D) Skyrocketed up from the morning.
E) Not changed at all from the morning.
Bonus: What salinity, in ppt, do you think the aquarium reads during the power outage?
Have fun with this one!
Previous Reef Chemistry Puzzle:
www.reef2reef.com
You calibrate your refractometer with that aquarium light with a standard solution of 35ppt or a refractive index of 1.3394 (seawater salinity). The aquarium reads 35ppt.
Later that afternoon, your power and aquarium light go out. The entire house is pitch black, and the only light you have is an incandescent light, which, for this purpose, shines about 650nm (orange).
You calibrated the refractometer earlier this morning with the blue light. You recheck the aquarium salinity to ensure everything is still OK.
Because of the difference in light from the calibration time from the morning (blue light) to checking it now (orange light), the current salinity reading has:
A) Fallen slightly lower from the morning.
B) Risen slightly higher from the morning.
C) Fallen drastically from the morning.
D) Skyrocketed up from the morning.
E) Not changed at all from the morning.
Bonus: What salinity, in ppt, do you think the aquarium reads during the power outage?
Have fun with this one!
Previous Reef Chemistry Puzzle:
Reef Chemistry Puzzle #10
Reef Chemistry Puzzle #10 A word scramble. All words relate to reef chemistry. Some are harder than others. I had pH in the list and decided to remove it. lol See how many you can get before running out of patience! ITTNERA CIITRC UMLCICA KVAOD AHOTSHEPP TALYINLAKI AESMMNIGU NGCORAINI...
www.reef2reef.com
Last edited:
