Mysterious single wilt out of 16

[OriginalDankmaster96]

I find it funny @vernal rot only struck one plant though, the rest seem fine, but I’m not going on that basis now. I’m going on the basis the whole root zone is endangered. Even at 71, I’ve dropped under 68 (67.2) and yeah the merry go around of ice packs isn’t stopping to keep cool. I’ve already looked into chillers, and I don’t have anywhere to hook it up and too expensive, so I have to settle for ice pack rotation as the best alternative. Yes that’s what UC roots is BLEACH, just plant safe formulated, so sterilization has been done at 5ml for 15 gall.