Plastic pond protection grids (Raby CH63)

Not for safety to prevent drowning. They are supposed to stop herons being able to get to fish underneath. We removed them when we cleaned out the pond and never put them back as we no longer have fish. I don't know how effective they were. We still had fish and the heron kept coming by the garden but we did t see it in the pond when the grids were in place. May require some new connectors but there are many still attached to the grids.