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melev

Measuring water's evaporation

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Each day for the past week, I've been marking how much water is being used by my reef. I took a piece of blue masking tape and applied it vertically on the acrylic reservoir I made.



Each day around the same time, I drew a line, marked the day and time it was measured.



What I've discovered is that the ATO reservoir holds more than a week's worth of top off water. In eight days, I've used 21 vertical inches of water. And there is still 8.5" of water remaining.

21.25" x 14.75" x 21" = 6592.19 / 231 = 28.5g

Averaging that out, the tank evaporated 3.57g per day. I'm expecting that number to rise when the window A/C is installed in the fishroom.

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Comments

  1. Jato460's Avatar
    My ato is a 5 gallon jug and I have to fill it 2-3 times a week
  2. Jnarowe's Avatar
    Very nice process Mark. My ATO tank was not clear, so I couldn't do teh same, but I estimated about 12g/day evap on my system, judging by when the RO/DI would kick in for a refill.
  3. DJ in WV's Avatar
    did you make it out of 1/4 or 3/8 looks pretty thick?
  4. melev's Avatar
    This was made out of 3/8" material since it was so tall. The taller the structure, the thicker the material due to water pressure on the walls.