Help removing bulkheads

[dwillingm]

Here is my problem... I need to remove 4 schedule 80 1.5" bulkheads. Unfortunately, they are mounted backwards, with the gasket on the dry side and the nuts inside the overflow boxes. I had a very strong person try to turn the nuts by hand, and they are not budging. I cant think of a tool that will fit in the overflow box to get some leverage. I considered trying to cut the nuts off, but they are flush against the glass and I worry about damaging the tank surface. Here is a picture of the situation. Any suggestions?

 

[dattack]

I think you might need something like these.
https://www.precisionmarine.com/product/closed-end-bulkhead-wrenches/

 

[dwillingm]

I think you might need something like these.
https://www.precisionmarine.com/product/closed-end-bulkhead-wrenches/

I thought about these, but they are in the shape of a hexagon and these bulkhead nuts are circles.

 

[Misled]

Channel locks.

 

[dattack]

Are those bulkheads silicone to the glass?

 

[Vinny Kreyling]

If all else fails I would drill some small holes in a line & split them in half.

 

[steve newman]

Hi,

You could try a an Adjustable Basin Wrench.

Stanley 070453 240mm Adjustable Basin Wrench



Regards

Steve

 

[Reefing102]

It does appear they are siliconed to the glass. That said, I know I had one on my tank that only came loose after twisting the bulkhead side. But mine also has a piece of PVC glued into it so I had something to grip.

If they are siliconed, I would try to slip a razor blade under the edge of the nuts to break up all the silicon from the glass and then channel locks

 

[kfisc]

A vise grips may do the trick; there are several kinds that could do the "reach around" pretty well. On the other hand, is there a chance the best choice may be to leave as is and adapt it into your plans? They do look fairly intractable.

 

[smatter]

When I first looked at your pic I was like whoa look at all those bulkheads! I also thought hey this guy is a pirate.

 

[aquaman67]

I would say using a hacksaw blade by hand and cutting them off from the bottom is the only option I see.