There is no longer a need to drain your pond or disturb your fish to make repairs because they are non-toxic, solvent-free, and isocyanate-free. With four times the strength of a typical silicone sealant, it can bond nearly anything to almost anything, including drains, gutters, tanks, boats, rockeries, coral, decking, concrete (though it is important to note that when applying to concrete, a PVA or concrete primer will be required in order to seal any loose surfaces), wood, PVC, and glass, among other things.
Over the course of 24 hours, it will continue to work and begin to heal.