I think I know the answer to this but I'm hoping I'm wrong. We tried to turn on the hot tub last night to celebrate making it through the Texas freeze and it started to leak under the wall (see pictures). I have five lines that are HT specific in the wall and the last one (on the other side of the wall from the leak) didn't have as much pressure as the others and my only guess is somehow that line froze and cracked? If this is the case, would that line be enclosed in concrete? Not sure how to fix if so. Any thoughts or help is appreciated.