Mama Bear wrote:

The problem I'm finding is that no one apparently makes grow light tubes
in T8, is that true? Lamps that have just the spectrum that plants need
the most?

I can find T5 grow lights from the site I gave you before. 2 and 4 foot.
2 to 8 bulbs per fixture.

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If I had something witty to say, this is where I'd say it.