Only concern regarding clones from clones is timing, at least for me. I usually veg to a plant is 18-20 inches then toss them into the flower room. However, most vegging clones aren't ready to give up viable clones until they are 5-6 weeks old. By then they are larger than 18-20 inches. So, if I'm vegging a clone I want to use as a clone-mother I FIM her or top her at 2-3 weeks vegging. That way I keep the height down so they don't flower into the light while letting them get old enough to give up clones. That is why most of us have designated clone-mothers. I'll keep one gal vegging in a bigger pot for an extra 4 weeks or so while I cut clones from her every week. I may take 8-12 clones from the designated c-m in those extra weeks. Then she goes into flower like everyone else. Running a perpetual grow (harvest 2 plants a week) requires lots of experience and knowledge to time all the various plants' growth. When I harvest 2 plants I need to have 2 18-20 inchers ready to take their spot. That means I have 2 new spots in my veg room. You can see where this is going, can't you? Timing is everything in a perp. BigSteve.