Diamond shaped reef aquarium

[banditpowdercoat]

I drew it up on Autocad and came up with 70g, so I would think that calculator is wrong

[Fishward]

I get 100 gallons too using the 90 degree angle between the 12s and the 36s. im not sure where that 22.5 comes in but that would yield a totally different shape as none of these angles are 22.5

[banditpowdercoat]

Ya MY bad. I redid the calc and ya it's 100. Iforgot a step LMAO My bad

[mechano]

Here is another calculator and it said 102 gallons..

http://www.theaquatools.com/volume-calculator