Romaine Lettuce falling to the side and growing thin

I own the Smart Garden 3. I recently planted Romaine Lettuce and it was growing well. I raised the lamp and now the plant is falling to the side and growing very thin. Looks nothing like Romaine Lettuce. Is there something I am doing wrong?

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Maybe too hot? Or maybe move closer to a window. @Mirjam, what do you think?

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I am having the same exact problem with my SG9. And this is my second attempt with the same results. And yes, it looks nothing like romaine lettuce!

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Sorry to hear that. It is usually related to hot temperatures and the lack of light. What is the temperature of your room @QueenM?

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It actually had lots of light and stays around 75° - 78°. But I read somewhere that the lettuce grows very quickly and must be harvested right away when at its peak.

78°F is quite warm for lettuces. Romaine lettuce should tolerate this, but you can see the results.
Herbs are safer.

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