Wasn't sure how well it showed up in the screenshot, so I circled the affected area - it's just that one metal ring on the bottom half of the tank. Every other part of the tank, including its counterpart on the top half, is fine.
This only affects the 2.5m variant, the 3.75m and Compact variants are fine. The tank contents don't matter, all 3 types are affected.
This only affects the 2.5m variant, the 3.75m and Compact variants are fine. The tank contents don't matter, all 3 types are affected.