Seal of bulkhead holes

[kalelin38]

I got Jay's old sump and there are two holes drilled in it. I decided I don't what to seal them of permantly in case I decide I may what to use them. So the question then is what would be the best way to seal them off but keep the for future applications?

I was thinking of use bulkheads that have a inside thread also that I could use a threaded plug to seal it.

So what are you thoughts?

 

[Eel-byte]

Thats what I would do. Just use some teflon tape on the plug.

 

[kalelin38]

I'm thinking that when I get a uv sterilizer the I will hook it up through those holes.