Tank sizes Manufacturer verses calculated volume

[Yanbbrox]

Any trade people out there because I'm confused

I accidentally came across another tank which I'm thinking about getting. The guys in the store when asked did a quick calculation of size and came up with 710 liters.

Since then I come home and read about the tank etc. from the manufacturer's website which states the tank is 600 liters.

I've put the measurements(from the manufacturer's and also some other retailers and they were the same) into MFKs conversion chart and it comes up with 732 liters.

I've tried other on line calculators and they are all about the same.

So I was confused, so I measured my other tanks. compared them to the different websites and the sizes were the same as I measured.

Entered them into the conversions and they all came back larger than stated, I'm even took out the width of the glass and they are all larger.

So I guess you would rate a 600 liter tank as 550 as you never fill to the top but why underestimate the size if under??

Or am I missing something????

Comments

 

[Bderick67]

Your situation seems to be the reverse of the norm. Usually manufacturers advertise volume is more then actual volume.

Best to figure it out for yourself and not worry about the advertised volume. Take the inside dimension LxWxH in inches and divide by 231, this will give you volume in U.S. gallons. Sorry I don't have a formula for any metric system measurements.

The only time you really need to know volume is for dosing purposes.

 

[Yanbbrox]

Your situation seems to be the reverse of the norm. Usually manufacturers advertise volume is more then actual volume.

Best to figure it out for yourself and not worry about the advertised volume. Take the inside dimension LxWxH in inches and divide by 231, this will give you volume in U.S. gallons. Sorry I don't have a formula for any metric system measurements.

The only time you really need to know volume is for dosing purposes.

Hence my post. I'd expect every 500gallon tank sold to only hold 450Gallon but I'm finding the opposite.

 

[nolapete]

When buying a tank, bring a tape measure and a calculator. Measure the internal dimensions of the tank then calculate capacity. You'll never be surprised because the internal dimension determine what the capacity ACTUALLY is.

 

[Yanbbrox]

When buying a tank, bring a tape measure and a calculator. Measure the internal dimensions of the tank then calculate capacity. You'll never be surprised because the internal dimension determine what the capacity ACTUALLY is.

This is point, I'm finding that by using this method I'm getting larger results. Even the tank builders seem to be underestimating their own volume?

 

[Tstove15]

This is point, I'm finding that by using this method I'm getting larger results. Even the tank builders seem to be underestimating their own volume?

This also happened to me when i measured a 150....it came out to around 159g's here on mfk

 

[12 Volt Man]

sometimes the manufacturers can confusing things.

for example, Aqueon calls their 150g which is 72 x 18 x 29.5 tall a 150g.

which is acurate because it is based on the INSIDE dimensions - note the hight - its taller than everyone elses 150 long which are 27 tall.

same with their 210g, which every other manufacurer calls a 220 or 225.

so people think that the aqueon "210" is smaller than everyone elses 220 or 225 when it is actually the same tank, just labelled accurately for a change..

however, all their other tanks are based on the OUTSIDE dimensions.

eg. thier 90 is the standard 48x18x25 etc

but had they used the inside measurements like they chose to do with their larger tanks, it would come out to a 86g tank

they aren't even consistent..

the advantage with their 150g size (which I bought) is that it is 2.5" taller than everyone elses version of the same tank..and is the same price too