Innovative Marine Ree 102

Q: What's used to hold this rack in place once in the tank?

Nothing but the weight if the plugs and it frags. When it's empty or lightly loaded it's not very good staying in place on bare bottom tanks. It's actually a weak design if it's not loaded down I can't comment on using it in a sand bed. I actually used 3/4" acrylic scraps to weigh it down attached with weld on 3 on the inside of the base