Acrylic Seam Bubbles

[Gage Zamrzla]

Picked up a used tank and got around to cleaning up the scratches and I realized an uncomfortable amount of bubbles along the seams on the back side of the aquarium. This only appears to be in the back on the left, right and top. It's 1/2" thick and dimensions are 60"x18"x24". I've had a couple of acrylic tanks but haven't dealt with bubbling seams at all. the tank is on a very level and measured surface and I've filled the tank 3 or 4 times and it's sat with water for close to a week before draining it to move it in the house.

Could anyone please give some input on whether or not I should move forward setting this tank up? My concern is the obvious blow out and what not.

 

[BIG-G]

If the bubbles are open you could inject some Weldon into them.
Lepisosteus has experience with repairing acrylic.

 

[Lepisosteus]

Injecting weldon is only cosmetic fix. Add weldon 40 tip and pour along the seams

 

[Gage Zamrzla]

Injecting weldon is only cosmetic fix. Add weldon 40 tip and pour along the seams

Would I go along the seams on the inside or outside or both?

Thanks Lepisosteus

 

[Lepisosteus]

Inside for the weldon 40. Both for the weldon 4. Only target the white areas, not the whole seam

 

[Gage Zamrzla]

Inside for the weldon 40. Both for the weldon 4. Only target the white areas, not the whole seam

Very much appreciated. Thank you for the info.