Tomato starts/hardening off

I start my cherry tomatoes indoors with a grow lamp but always find they get very leggy before they’re even big enough to begin hardening off. I’m in Zone 8a/b in western Washington State, for context.

I have a 32ft high tunnel, so I utilize that for hardening off before subsequent up potting and transplanting.

Does anyone have any advice for starts that seem to be struggling for light? Should I get a more powerful grow lamp? I have south facing windows and they get some natural light as well, but it never seems to be enough.

My current lamp is an LED 1000W with both bloom and veg settings.

Thanks everyone!

I recommend placing that lamp 2" above the tops of the tomato seedlings.

Also, you might brush your hands across them several times per day, and/or install an oscillating fan near them.

They will grow more slowly with cooler temperatures.

Thank you! I wasn’t sure how close was too close so I’ll move the lamp lower and will definitely try the brushing technique. I was also thinking of adding some reflective material to the makeshift panel (it’s a cardboard box) I have around it. And I keep my house always between 65-70° so they don’t struggle with being too cold.