I am fixing that gap tomorrow so I will do that thanks for the advice...
after that its just time to separate the breeding pairs and start making babies.... my tub layout will be the following
Tub 1= Grow out tub
Tub 2= Nursery
Tub 3= Nursery
Tub 4= Breeding tub 1.3
Tub 5= Breeding tub 1.2
Tub 6= Breeding tub 1.2
I want to thank all of you for your help through building this rack.