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Another question for the brain trust.
OK, this likely simple.
My wife has a 75 gallon aquarium with African Cichlids and some other fresh water fish. The tank is 48.5x18 and 21.5 inches tall. It has rocks and gravel and fake plants so I know it does not have a full 75 gallons of water in it but it does not really matter the precise number of gallons, the rocks just displace some water. Pretend the rocks are water and it is a 75 gallon tank.
We have to do a partial water change periodically and we use a hose with a water bed siphon hooked to a sink to remove and add water so we can't measure the volume of what we remove or add.
My question for the brain trust: The tank is 48.5 x 18 and 21.5 inches tall is 75 gallons if we drop the tank by 10 or 20 gallons how many inches of water is that?
We need a way to figure out an approximate gallons per inch of vertical height. If we want to remove 15 gallons how many inches is that?
__________________
Glen
49 Year member of the Porsche Club of America
1985 911 Carrera; 2017 Macan
1986 El Camino with Fuel Injected 350 Crate Engine
My Motto: I will never be too old to have a happy childhood!
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