I did do some additional reading in the traditional gardner forums..first, I think you are right, the brown tips were from Calcium defficnety as that has cleared since changing the thanks, though, the damage is done.
second, curled leaves meaning too high a nitrogen. So my mix was too strong. I'll need to make notes that 5 tsp for 3 gallons is the next try.
Last, my lettuce never grew hearts. They bolted so you are again, correct. The temperature is too high on the grow table for Romaine. The chard and Kale are fine, esp after raising the light up 10 inches. However it's still above 70 degrees and thus the romaine is going to bolt.
Is this why hydro growers typically grow bunch lettuce like butter crisp?
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