Im in the process of setting up the fiji cube 24 v2.
Ive had it since may 2020 and just got around to leaktesting. It failed at the bottom seam in the return chamber.
Customer service has been less than stellar from the start to be honest. It was like pulling teeth to get them to replace lids with melt and burn marks.
After buying a new one and returning the old one for a warranty refund i can say 100% that the white top that holds the lids was cut wrong and the new sump that arrived was cut correct.
All and all its a good design and i am going to use it but not before running some 300 grit sandpaper over all the openings edges.
Talk about razor sharp!