I'm no expert but for filtration, I guess you will need to treat this as though it is two smaller tanks to get good circulation. Can't see how you'd get decent flow round the front corner otherwise. Couple of the bigger filters like the FX5 or ideally the eheim equivalent should be ok
On a big tank I'd go for a sump for ease of maintenance if I didn't have little ones around.
On a big tank I'd go for a sump for ease of maintenance if I didn't have little ones around.