Leaky Pipes

I see a union in the upper right of the photo so this now looks easier than the first look I had. Take the union apart and that will let you turn and unscrew the 90 and extension from the pump out of the pump. Resealing the threaded portion might be possible with teflon tape or pipe dope but others will need to confirm this.
 
Is this the rest of your pump and plumbing?
1000007857.jpg if it's leaking where the gray fitting is theaded into the pump, you should be able to undo that Union and remove the threaded fitting. Use a PVC pipe sealant and reinstall the fitting. Check out the section in this article on assembling threaded joints:

 
Is this the rest of your pump and plumbing?
View attachment 645103 if it's leaking where the gray fitting is theaded into the pump, you should be able to undo that Union and remove the threaded fitting. Use a PVC pipe sealant and reinstall the fitting. Check out the section in this article on assembling threaded joints:

Yes, that's the picture. Thanks so much d r the help, I will try that!