Quick Biorb Question

[Jodiem]

hi, i got a biorb from a friend but dont know how big it is. I measured it, it is 144cm around the biggest part of the bowl, the circumference (may be spelt wrong havent done maths for a while!)


Thanks
Jodie

 

[Davo86]

hi, i got a biorb from a friend but dont know how big it is. I measured it, it is 144cm around the biggest part of the bowl, the circumference (may be spelt wrong havent done maths for a while!)


Thanks
Jodie

do you mean the volume?
the baby biorb is 15L, the standard is 30L anf the largest one is 60L

 

[Jodiem]

yeh but i dont know what the volume is cos i got it from a friend and i dont know which one it is
, does anyone have one that is 144cm in circumference if u do can u tell me how many litres it is

Thanks
Jodie

 

[jonny_dw]

You'll have the 60l as we have the 30l downstairs and that is 126ish cm.

 

[Jodiem]

yay!! thanks it going to be a fry tank but probs turn it into a female livebearer tank

 

[jonny_dw]

Sounds good, hope to see some pics

 

[Jallen]

Diameter = Circumferance / PI
D = 144 / 3.1415926535
D ~= 45.8

Radius = Diameter / 2
R = 22.9

Volume = (4/3)(PI)(Radius^3)
Radius^3 = 12037.8
PI = 3.1415926535
4/3 = 1.333...
So V = 50420, but since we want it in litres (and we used centimeters, where 1 litre = 10cm^3) we divide it by 1000 which gives us 50.4.
So it's about 50.4, however its slightly less than that because of the thickness of the glass and the fact that the water level isn't the complete size of the tank. So although they market stuff at these sizes, you can always check, though the chances are the result of the calculation is slightly incorrect due to measurement error.

But yeah, that's how you find out for future reference.