I agree, use a ratcheting strap, or two, around your tank to bolster what strength is remaining. You can loosen the straps while repairing then reapply the tension to them and let them act as clamp.
Be sure to place a piece of cardboard or towel between the ratchet mechanism and the acrylic to prevent scratches. -FM
Be sure to place a piece of cardboard or towel between the ratchet mechanism and the acrylic to prevent scratches. -FM