Seedling not growing - K deficiency?

This is my first grow and I definitely did not plan enough. These are blue dream photos. I bought the seeds before I realized growing outdoors is likely not possible for a number of reasons, but I thought I’d at least try my hand at getting them through the seedling stage before I gift them to someone (if they live).

Day 17 for the bigger plants and day 12 for the little one. The LED lights I started them on were not strong enough so the first two stretched like crazy. Bought HID but had issues with the equipment. Switched to 1500W LED a few days ago. Started Adv Nutrients a few days ago. I did NOT PH the water before I started feeding. From what I read it wasn’t necessary but that may be the problem. Temp is a steady 75, humidity 45-50% and been spraying with a little water. They’re in Jiffy seed starter.

The bigger ones only recently started getting their second set of leaves but are now growing well. Stems went from white to purple. the little one is already started it’s second set.but it’s so tiny. the leaves are a little darker green- hard to color correct with these LED lights.

There is a TINY bit of browning on the tips of one of the larger plants - the far tip of the leaf pointing south.

Thoughts?

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Hi - managing pH and ppm of the water/nutrient solution and measuring and adjusting based on the runoff is key to a successful grow. Your plants look ok, but pH needs to be on point.

I have one of those 1500w blurples. It’s ok but it can only flower about one plant in a 2x2 footprint.

Good luck!

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Over watering is the main problem I see. Those plants need like 1/4 cup every 3 or 4 days. They are damping off and taken too long you will get root rot. Best to take them almost completely dry. Cannabis likes loose, airy, dry soil.

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Experienced community members and expert staff will be better informed and more capable of providing a more informed answer.

COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non applicable)

  • What strain, Seed bank, or bag seed
  • Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
  • Vessels: Pots, Grow beds, Buckets, Troths
  • PH of Water, Solution, runoff (if Applicable)
  • PPM/TDS or EC of nutrient solution if applicable
  • Indoor or Outdoor
  • Light system
  • Temps; Day, Night
  • Humidity; Day, Night
  • Ventilation system; Yes, No, Size
  • AC, Humidifier, De-humidifier,
  • Co2; Yes, No

Always try to upload a clear picture of any issues you may have to allow the community to assist you.

Add anything else you feel would help us give you a most informed answer should be included. Feel free to elaborate, but short and to the point questions and facts will help us help you in a more efficient manner :slight_smile:

Thanks!

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