Everything looks normal to me. What strain is that? Some genetics are naturally squat with tight node spacing; so it could just be the strain.
Another impact on node spacing is blue light. If there's lots of blue light in the spectrum (about 20% or higher), then it's probably a contributing factor. Unfortunately, just looking at the grow light's spectrum chart you can't tell how much blue light is in it - even if there looks to be a large spike. Although, the kelvin temperature could give you an idea.
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Everything looks normal to me. What strain is that? Some genetics are naturally squat with tight node spacing; so it could just be the strain.
Another impact on node spacing is blue light. If there's lots of blue light in the spectrum (about 20% or higher), then it's probably a contributing factor. Unfortunately, just looking at the grow light's spectrum chart you can't tell how much blue light is in it - even if there looks to be a large spike. Although, the kelvin temperature could give you an idea.