Hi there Steve, unfortunately that leaf curl isn't normal, it's likely a combination of heat stress and root problems. Basically the heat and the extra humidity created the perfect conditions for watermold which is affectikg your roots. It's pretty easy to solve by making sure the soil dries out completely before you water again and you can speed up recovery by adding a chelation agent to your feed for example beneficial bacteria like bacilus subtilis and trichoderma or enzymes or humic acid or amino acids, or synthetics like a diluted "flushing agent" these will break down the problem roots as well as fight the infection. Good luck crossing the finish line! Hope this helps ! 🚀