Atomic NL by Dr. Atomic Seeds

Atomic NL strain photo
Type mostly indicaFlower ±56 daysCross Northern Lights Nr5

Atomic NL is an indica-leaning cannabis strain from Dr. Atomic Seeds, bred by crossing Northern Lights Nr5. Indoors it typically finishes flowering in around 56 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Atomic NL grows against.

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BreederDr. Atomic Seeds
Typemostly indica
Flowering time±56 days
EnvironmentIndoors
LineageNorthern Lights Nr5
DescendantsThai Lights, Blast, Northern Lights

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🧬 Explore the family: Thai Lights · Blast · Northern Lights

Ancestry Pedigree

Northern Lights Nr5
The Seed Bank
Purest Indica
Clone Only Strains
Afghani
Unknown or Legendary
Afghanistan Indica
Original Strains
Hawaii Sativa
Original Strains

Growing Atomic NL: what to expect

As an indica-leaning plant, expect a modest stretch after the flip (roughly 50–100%) and dense bud structure — which makes late-flower humidity discipline the main risk: keep RH in the 40s once buds fatten to stay ahead of mold. Growers familiar with Northern Lights Nr5 will recognize much of its behavior. Whatever the listing says, the cut in YOUR tent is the ground truth: log feedings, readings, and photos, and let the trends — not the label — drive decisions.

Atomic NL FAQ

How long does Atomic NL take to flower?

Atomic NL typically flowers in around 56 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is Atomic NL an indica or a sativa?

Atomic NL is listed as mostly indica.

What are the parents of Atomic NL?

Atomic NL was bred from Northern Lights Nr5 by Dr. Atomic Seeds.

What environment does Atomic NL like?

Standard cannabis bands work well: VPD 0.8–1.1 kPa in veg and 1.0–1.4 kPa in flower, with humidity stepping down from 65–75% as a seedling to 40–50% in late flower. See the stage-by-stage table on this page.

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Published by Cultivar (logmygrow.com), a structured grow journal. These reference bands are the same ones the app grades real grows against. Free to cite with a link. Some outbound product links are affiliate links — see disclosures.