I currently don't have any fish that are considered jumpers but would like to stock some wrasses in my new build so I'm looking at some type of net cover.
However I have a friend who has a 4,000 liter system with no lid of any kind who told me that if you have eurobracing around the entire perimeter of the tank, it is very unlikely that jumpers will jump out. His reasoning is that most jumps are accomplished by the fish streaking straight up against one of the sides of the tank, and almost never in the center. If you have eurobracing around the entire rim the fish will hit that and be stopped from flying.
I haven't yet decided if I want to test his theory ;Joyful... but he has wrasses and as far as I remember he said he's never lost one. His tank however is a large cube so there's also plenty of space for a fish to jump and land back in the water!
However I have a friend who has a 4,000 liter system with no lid of any kind who told me that if you have eurobracing around the entire perimeter of the tank, it is very unlikely that jumpers will jump out. His reasoning is that most jumps are accomplished by the fish streaking straight up against one of the sides of the tank, and almost never in the center. If you have eurobracing around the entire rim the fish will hit that and be stopped from flying.
I haven't yet decided if I want to test his theory ;Joyful... but he has wrasses and as far as I remember he said he's never lost one. His tank however is a large cube so there's also plenty of space for a fish to jump and land back in the water!


