Brilliant, eh? Thanks for the warm fuzzy.

Yes, that's us with the sand-filled PVC tubes. We have three inside the bottom step and three hanging from the top step using electical ties and S-hooks. We've had one of the ties break and the tube just fell to the bottom inside the step cubby hole.

I like the idea of using rocks because, just in the event a tube should break or leak, rocks are easier to clean up. What I really like is using Quick-Crete. It probably is even heavier than sand. Suspending the hanging tubes might become a problem due to the weight, I don't know. We stuck with sand because it works for us. No leaks yet.

Anna