Have you looked at Gyres? A lot of people I see with monster tanks seem to run those...they shift a LOT of water!
Yes a long time ago when they first came out. My tank has massive glass platforms which had a load of pipework for a closed loop on either end. Theres a main weir one end and a small weir the other that half is dry for the closed loop pipes and half used to take water ,tho its sealed off now . There are angled sides as well so while a gyre would be a great idea they wont fit . I cant even have a wavebox in this tank due to the friggin braces.
Its a bit of a sore point as I had it custom built ,but when it arrived it didnt much resemble what I ordered . Not even the cabinet colour
but thats a long story and we have reconfigured a lot of it ,but these massive braces we cant remove.