[Best way to seal leaking connection]

Thank you for the great instructions and the silicone recommendation!! I really appreciate it. 

[Best way to seal leaking connection]

I have a hot tub with a leak at the suction intake at the bottom. I’ve attached a picture of the exit part that is leaking. I also attached another picture showing the exterior shell. It appears the leak is coming between the fiberglass and hardware that is mounted. I suppose it needs to be resealed. What is the best way to do this?

 

many thanks!