I'm feeling my way through this myself. I turned down the lights because they looked like they were getting light burned. I may even turn them down more. Previously I had the T5 in there and can keep these for around 6-9 months. With constant toppings. This area is roughly 2x2x2.
Last night I decided to give the mother plants a feed and a trimming. I may have gotten a little carried away with the Juanita mother. There are three that definitely need to be reset, Juanita la Lagrimosa, Adonis, and Grass Monkey. Next round of clones will be those.
The Zak Haze clone is slowly making its way to the screen. I can only assume that it is working on the root system. Ironically I noticed that the extra clone that I just threw in my old bag of recycled soil was still alive? It's been in there with no light for about a week now.
Stick a fork in these testers, they are done.