Your pool ladder is probably made from PVC (polyvinyl chloride), which is not only strong and durable, but also hollow. To make sure your ladder stays underwater, you must displace the air inside the PVC tubing.
Step 1 - Inspect Ladder
Before you begin, make sure that the covers on the bottom of the ladder won’t come loose so that gravel or sand won’t be spilled when it’s time to return the ladder to the pool.
Step 2 – Take Apart Ladder
Use a screwdriver or wrench to take the ladder apart. It should be possible to take the upper bars off without dismantling the steps.
Step 3 – Fill the Ladder
Using the funnel and the scoop or small shovel, fill the hollow portions of the pipe with the sand or gravel. If possible, fill the upper support bars as well.
Step 4 – Reassemble Ladder
Reassemble the ladder. Tighten the nuts or screws tightly to prevent the new sand or gravel from pulling the joints apart.
Step 5 – Return Ladder to Pool
The use of this simple technique should result in a pool ladder that doesn’t float or move.