What to Use to attach Plexi to Plastic????
 

I have a cross brace on my tank that blocks out my light and I want to cut it and glue a piece of plexiglass in it's place. I have tried epoxy and it didn't bond well enough. What would be the best product to use ?
Must be somewhat safe as the brace is just above waterline in tank.
Would another clear product work better than plexiglass ??

Thanks

Ummmm...Glass?


I have a glass cross brace in one of my rimless 90's and I don't even notice it...

Are you talking about attaching the plexi to the top frame of the tank?

Dont people normally use clear silicone for that?

I thought plastic to plexiglas with a little stress would be to much for clear silicone?

Had the plexiglas handy and thought it would work. Was looking for glass.
Would silicone hold it to plastic?

Silicone actually dries pretty sturdy. Just squeeze a good bead along the bottom, and press it down, and squeeze some more around to fill in the edges, and let it cure overnight.

I used it to put lucite baffles in my sump, holds rock hard. It was actually a PITA to remove when I wanted to change the layout of my sump!

I assume the tank is glass with a black plastic brace around the top. You removed the black plastic center brace and are looking replace it with clear. Best solution is use glass, have it cut to fit exactly from inside front pane to rear pane (same length as side glass panes). Install the glass brace with silicone underneath the plastic brace so you have glass on glass contact. This will be the strongest. Another alternative is to remove all black plastic trim on the top and Euro brace the whole tank, this eliminates the need for a center brace all together.

2 Concerns
 

First problem is that it is a bowfront tank so some real custom glass cutting involved.
Secondly, tank is full of water and I would not be sure it would hold withouit plastic rim. It is an All Glass Aquarium.
I have ordered a piece of glass and will try to seal it as tight at both ends as tight to the glass as possible.
should have just went this route at the start, was looking around for material and the only thing laying around was plexi. Cheap never works........

ahh bow front, lame! :wink:

Should note that modifying any bracing on a tank should be done with no load so the tank should be empty.

I had a corner bowfront and had Crystal gals in Edmonton cut me a curved peice of glass for a top, they just asked me to cut them a template out of cardboard and they did the rest, it was a perfect fit.