Sump needed for 500gallon reef tank

[telamont]

Hi,
Does anyone know where I can purchase sumps large enough for 500 gallon systems? Is there an equation to how large the sump needs to be? I was thinking of finding either a premade sump or some sort of large acrylic container that I could fit a huge skimmer and maybe 4 filter socks into. Im wondering if this would be good enough for filtration or if there is something else I should add. I would probably want to run carbon and phosban I assume as well. Thanks for the help.

 

[Scubaken]

I have a 120 under my 350, which works for me

 

[telamont]

Is there somewhere you purchased this? anyone heard of glasscages.com?

 

[Vinny Kreyling]

Sumps can be made from used tanks just as easily. Just make sure the glass is NOT tempered so you can drill it for a bulkhead.