To seal a skimmer, you will need:
• Clear silicone caulk
• Sponge or cloth
• Damp rag
• Bucket of water.
Apply the caulk around the edges of the skimmer, ensuring a tight seal. Wipe away any excess with a damp cloth and allow it to dry. Finally, fill the bucket with water and submerge your skimmer in it for 24 hours to make sure there are no leaks.