This week I didn't fill the reservoir, so they were still using the solution from the last week and then the remaining moisture from the soil. I spotted some sus looking parts in the Glookies and since it looks done and started fading very quickly once the reservoir was empty, I decided to chop it on day 70F (first day of week 19).
The others, especially the GMO, look like they can keep going a bit longer, so I gave them a watering directly into the pot.