Hey all, I recently moved some free swimming Uaru fry to a marina breeder box. Initially moved 30. Then there was 20. Now there’s 5. No bodies. Instead of the normal outflow cover, I have a piece of filter sponge (I lost the two little covers somehow). Can’t imagine 25 of them slipping through the maze work that is sponge. Any ideas or similar experiences? Super disappointed losing that many fry. Should I just set up a 5.5 or 10 next go around?