Fish Safe Sealant
Underwater Sealant is great for piece of mind when repairing poly Aquaponic Fish Tanks. Drill the leaking point out to a typical uniseal size, and then use sealant around the Uniseal when inserting it into the hole. Through the centre of the uniseal goes the correct PVC pipe with an end cap on the end.
Fish Safe Underwater Sealant is suitable for sealing around all points of the PVC and Uniseal to make sure there will never be a leak, or chemicals leached into your Aquaponic system.