E-Z Patch 4 Fast Setting Underwater White Pool Tile & Grout Repair - Tile Grout (3 Pounds, White) - Swimming Pool Deck Protective Coatings - Amazon.com
Submerseal® - Sika Emseal Expansion Joints
Amazon.com: Nano Tech Q-10 Underwater Seal & Lock - Does Not Require Emptying The Pool, Reservoir or Tank. Leak Sealant Repair and Adhesive to Fix Cracks and Stop Leaks – Waterproof -