acrylic hole patch

[tsharpe291]

I have an acrylic sump that is drilled for an external return pump, I think its about 2&1/2 inch bulkhead.
I want to use this sump on my tank upgrade but I don't want to go with an external pump. is patching the hole
as simple as cutting a square piece of acrylic and welding it on? definitely want the patch to be something that won't eventually leak. any advice would be great, thanks.

 

[KrisReef]

Put the proper size bulkhead fitting in the hole and then get a plug fitting (threaded or slip) and the hole is plugged by tightening or gluing the fitting into the hole.

 

[tsharpe291]

Put the proper size bulkhead fitting in the hole and then get a plug fitting (threaded or slip) and the hole is plugged by tightening or gluing the fitting into the hole.

that's probably the route ill take, thanks for the input