Please help me figure out my water volume

greetl01

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I'm getting ready to dose prazipro and I added my rock and sand without measuring what was left smh I have a 29 gallon tank, 30 pounds of rock and about 30 pounds of sand. thanks
 

JumboShrimp

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That’s cool, @Seadoc .

As an approximation, I was going to say, mark your water level with a piece of tape on the outside of the tank. Siphon out water into a gallon jug, or even a 5 gallon bucket. Measure how far down the water level drops. And then calculate how much water is in the tank using that method. Note that less water by volume could be down in the tank with the rocks are, but that’s why I was asking for a photo. Lol. Best wishes.
 
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greetl01

greetl01

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That’s cool, @Seadoc .

As an approximation, I was going to say, mark your water level with a piece of tape on the outside of the tank. Siphon out water into a gallon jug, or even a 5 gallon bucket. Measure how far down the water level drops. And then calculate how much water is in the tank using that method. Note that less water by volume could be down in the tank with the rocks are, but that’s why I was asking for a photo. Lol. Best wishes.
Can’t. Already added fish
thank you. Going to try now
 

JumboShrimp

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No, I think you misunderstood me. Even with fish in there you can certainly siphon out a single gallon, correct?
 

Malcontent

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Dose known volume of dye in tank. Measure with spectrometer. Do math.
 
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