Need help with the math!

[batman3n1]

HI all,
I have a couple questions about water volume. I know the formula for figuring a tanks size in gallons, but wanted to know how to figure how much water will be drain from the tank when the pumps are stopped. Also how much additional water the sump can accept before an overflow occurs. For the sump, I was thinking the shorter the dividers, the more volume it will hold. Is that true?

Thanks in advance, guys.

 

[tanked37]

When the return pump stops it will back siphon into the sump. This will depend on the location of the spout (likely a flow accelerator) into the DT. You can drill a small hole near the top of the return PVC pipe just below the water level to stop siphon.

Anyway, if you know how to calculate water volume already, then what's the question? You can calculate the total volume of the sump right? You can calculate how much water is in there just by measuring the dimension based on the water level line.

 

[Jamaharon]

Gallons is a measurement of volume. Inch^3 is a measurement of volume too. Instead of coverting inch^3 to gallon just leave the units in inches^3 and to the math that way. If your tank siphons 3 inch^3 from the display, make sure your sump can hols 3 inch^3 more of water.

Simple