410: Leaking water tank

[Pavo Real]

Have a lagoon 410, built 2000. The plastic water tank has developed a leak. What is the method for repairing and sealing a leak to a plastic tank? I expect I need to match the polymer. If it helps the plastic is green.

[JPCorrigan]

I had a leak in a water tank that was made of Fiber Glass. I could not find the source of the leak but suspected it was stress cracks as the boat is a 1987. Thru another forum I was put in contact with a specialties coating company in Washington State. They have a two part coating that meets FDA standards for contact with food. In talking with them I was told the coating is somewhat flexible when cured and to just coat the entire tank. No More Leak. The link is below

FDA rated epoxy paint and coatings product. For use on potable water tanks,brewing tanks, etc.

[katsumi]

You can get small plastic weld repair kits from hardware, here in Australia I found one in Bunnings, they have repair rods for the different plastics, I did some repairs on some sea kayaks which worked well, I contacted the company that made the kayaks and they sent me the plastic in the colour I needed for the repair.

[Sid at SailAway]

Need more info. Is it a small leak or large? Is it leaking towards the top or bottom? Is it leaking at a seam? Is it leaking where you can get to the leak? Something as simple as a dab of 5200 may work...