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how old are those lettuces?
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Well, they have been in the system for about a month now. And it took about 2 weeks for the
seeds to go from package to system. All in all, about 6 weeks total. Considering the inefficient bubbling system that I made for it, as well as all the cloudy and rainy days we during that time, I'm happy with how they are doing at this point. The way they are growing I will probably start harvesting within the next 30 days. That's why I wanted to start some more seeds now, so Ill have some replacements. Also when I strengthened the
nutrient solution from 1/3 to full strength, there growth really took off. I plan to changing the nutrient solution tomorrow, so that combined with the new air stones, I'm pretty sure they will have another burst in growth (not that they have slowed down though).