UltraZap Hydro Seal is a cementitious waterproofing sealant for lining and repairing ponds, tanks and other structures that hold water — including concrete fish-tank and aquarium structures. It seals the shell from the inside, so a leaking or weathered basin can be brought back to watertight without rebuilding it. Choose the size to match the job: the 2kg covers a small repair, while the 12.5kg and 25kg buckets cover a full re-seal.

Good to know:
– Sizes: 2kg, 12.5kg and 25kg
– Cementitious sealant for water-holding structures
– For lining new ponds and re-sealing old ones
– Small size for patch repairs, buckets for full applications