Hard to tell from the pic, but try putting a 2x4 between the 2 nuts. If it's close to the right size, it will jam them from turning and you can then twist the other end. It's going to be a 2 person job. You might have to remove the overflow to access them properly though...

You could also buy a longer threaded pvc pipe and thread it from the bottom up. Have your wife hold it in place. Then use a clamp or lock vise on the nut and remove it. The longer your clamp on the nut, the more leverage you will have to twist it off easier.

Spraying it with some vinegar will also help to remove the salt creep sealing it together.

Good luck

If you're prepared to buy new fittings then use a dremel tool with a cutting wheel and slice down one side.

Just don't let any electric drilling tool get away from you or you may have a bigger problem on your hand. You could always glue a piece into the existing bulkhead from below to get something more to hold onto while the other person is twisting from above if you were just going to discard the bulkhead afterwards anyways.

So i purchased one of these http://www.homedepot.ca/wcsstore/Hom...814.T152_3.jpg

If that doesnt work I think the wife will do this to me!http://t1.gstatic.com/images?q=tbn:A...b94qLocnkCXCsQ and if that doesnt finish me off. I will cut the top off (the part under the tank) and just pull it up and install new ones which I'm gonna put new ones in anyway.

Its installed backwards.

right and since its backwards im going to cut off the top which is actually on the bottom. And hopefully that will allow me just to lift the rest out of the overflow.

any bulkhead i ever used was reverse threaded therefor "lefty tighty, righty loosey" ? maybe mine are odd? +1 on the bulkheads installed backward tho...

It will seem that way when you are dealing with them upside down

The bulkheads I just bought are righty loosey,,,,lefty tighty.....