Calculation Problem

[tidyshow]

I bought a home made diamond shaped tank as a temporary standin until
i buy a proper replacement for my juwel rekord 70 tank which started leaking
really badly one day.
anyhoo, the tank i bought is as mentioned diamond shaped which is giving me
some trouble as i'm trying to figure out its litre capacity.
if anyone can help i'd be eternally grateful.
the sizes are in the attached image, the height of the tank is 520mm.

 

[Arachnidzone]

Hi, i get it too...

31.35g (UK)
142.5l
37.6g (US

Split it into 2 squares and divede the corner square by 2. Anyone disagree? or get different answer?

Is this internal measurments?

 

[BigC]

Yep that sounds about right according to
http/reef.diesyst.com/volcalc/volcalc.html
Corner Pentagon shape.
Regards
BigC

 

[tidyshow]

thanks folks, i just need a rough estimate for the amounts of safe water etc
to add when doing changes and so on.
thanks again.

 

[Arachnidzone]

not rough but still easy enough. Glad to be of service. And glad im not as bad at maths as i thought. If only they could have given interest-relevent questions in school!

BIGC thats a good calculator! Much better than some!

 

[RedeyesUK]

I know this has been sorted now, but:

Personally, for things like that, I'd just take the simple, surefire option - simply fill the tank using something you can measure the capacity of (2ltr water bottles for example, or my buckets have capacity markings on them), and just count the number of containers you need to fill it.

Saves a lot of mucking about!

 

[BigC]

BIGC thats a good calculator! Much better than some!

Yeah i sat there with pen and paper trying to work out the formula and with all the background noise from the kids, It was pickling my brain (lost the decimal point I think).
So I decided an internet lookup would suffice and also It's a good one and can be brought to the fore in the future.
Glad everythings sorted
Regards
BigC

 

[Arachnidzone]

Redeyes, once you get into 100litre+ aquariums thats a whole lot of time compared to a 1 min equation or a google session. I suppose you could fill to 1/4 or even 1/8 if you have a good eye then do the math.