Um,
3200gallons, roughly 9x18' 42" depth.
Filtration- ~220gal vortex that slits off to 2 55gal drums with microstrainers. One pump pump through bead filter to shower filter. Other (also pulls from strainer basket) to Moving bed. Another 1000gph pump trough separate moving bed. Covered in thread
[DIY] Shower/TT and Aerated Moving Bed