Hey very nice plants ,but I think you have pests :( check the underside of the leaf for small white lines or dots. To me it looks like it is a trip because the leaf tips are so wavy and that is a typical sign of it. Still good luck and a good one grow :)
Thank you for making this diary. My tombstone plant is on week 4 and I hope it turns out as nice as your plants did. Any tips you can give? What do you think caused your plants to herm?