Seedlings stalled growth

I started my seeds in water. All 6 germinate quickly. I then planted them in soil, watered and covered in plastic until they popped up needing light. I then put them in my grow tent. I have a tiny heater in there because it’s still cool outside here. I have grown these before and this time they just seem like they are doing nothing. At a stand still. Last time I grew them on coca fiber. This time in this nice organic potting soil. It’s the only difference. It’s nice and warm in the tent. image|375x500

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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

Also, how often are you watering? Coco needs water VERY often, soil does not. I germinate, plant, water, then let the pot get almost as light as it was without water before watering again.

More info would help, but, seedlings will appear to have stalled. It’s what’s going on below the surface that you can’t see. ROOTS. Sounds like you’re on the right track. Patients :wink:

How many days since germination? It’s more than likely just busy sending out roots. As long as the seedling looks healthy, I’d give her time. Can you give us a pic?

The only thing different is my soil. I have grown before with success. I purchased this organic potting soil and I am assuming it’s not airy enough. I popped my pathetic little seedlings out of the solo cups. I was actually surprised for how tiny they are, they grew some decent roots. Anyway, these are two weeks germinated and just not growing.
I put about half inch of pearlite in the bottom of the cups to raise them up a bit and allow for some air around the soil. I’m going to grab some ph testing while I am out today.
I feel I want to loosen up this soil but not sure how I can without damaging these threadlike roots.
I have 6 seedlings all different varieties. Grand d purple, bubba kush, bruce banner, gorilla glue, Girl Scout cookie, pure indica.
They all look equally pathetic for two weeks old. Puzzled

Wow! What lighting are you using? Also they look a little wet. They really do like to dry a little between drinks. Then, in measured amounts. You would have done better by mixing your perlite with your soil, instead of on the bottom.

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First off, how dry are you letting them get before watering? Cup should be very very light when you need to water again.

As @TEGRITY said, perlite is best mixed in the soil, not on the bottom of the cup.

Also, do your solo cups have drainage holes? It also looks to me like they are sitting flat on that plastic too. They should be raised up a little to allow drainage.

You said you “popped my pathetic little seedlings out of the solo cups” what do you mean by that? You dug them out then replanted them? If so, you are causing more stress to the plant which will also stunt its growth, making your problem last even longer.

What is this mystery organic soil you used? Need info to help, friend. That’s why my first post was asking you to fill out that information form… Said you have a heater inside the tent and that it is ‘nice and warm’. Temps? Humidity? It all matters man… Hygrometers are cheap, around $5 - $10 on Amazon depending on the features you get.

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Went through your old posts and found some of the information I needed.

MOST of us here don’t put a lot of trust into the type of light you have. You said it is a Full Spectrum light which may be true if it has white LEDs, but if it were a true full spectrum light, it would be giving off a white hue (or small variations of white, depending on the LED temperature). Yes you can grow with it, but your bud is only ever as good as your equipment and grow methods. Another thing with that light is it may say it is 1000W, but I absolutely guarantee you it isn’t. If you look somewhere on the light, the packaging, sales listing, or their website you will find the actual power draw that the light takes from the wall. That is the actual wattage of the light. Also you need way more wattage for 6 plants. Maintain 24" distance from seedlings like these as well. I would guess that light is around 100 watts or less, which I believe is good to veg a 3x3 area and Flower a 2x2 area, at least this is what my 100 watt light recommends and mine is full spectrum. If your tent is the same 4’ x 2’ x 5’ that was mentioned in your other post, you are working with double the volume that you can support with that light.

Yes they have holes in the cups.
They are bone dry before I water.
Popped them out without disrupting them at all.
Added perlite to bottom because it appears the soil could be too solid. I know they like loose airy soil but this new mix is not what I expected
I have grown 6 plants under this same light with great success in the past.
I’m so puzzled be so have had two great fries with all the same equipment and methods and the only difference is my soil this time

Then the soil is the problem.

If that light works for you and you are happy with it, then awesome! Go with it.

As for the soil, I would recommend just getting some perlite and Fox Farms Happy Frog soil. You would then need to get nutrients after the nutrients in the soil have run dry. If you still want to use organic soil, I recommend looking into the forums grow journals for someone who also uses organic soils.

Also, just thought about it… Are you pHing the water you feed?

Thanks for all the input.
Yesterday was the day I popped the soil and seedlings out of the cup and put the pearlite in the bottom. It raised the whole clump of soil up so that there is an air space around the perimeter. I did not want to crumble the soil to get some pearlite mixed in as I did not want to disturb the roots. I just checked on them and hmmm, they look better. The soil was dry because they got more air. Not happy with this soil. It felt fine and fluffy when I potted them but it did get packed.
They have improved. When it is time to transplant, I will certainly use loose soil!
I’ll try to keep you all posted.

What soil? I recommend using Fox Farms Happy Frog.

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I would recommend posting those pictures in the Organic soil section in the forum to see if it is good to use before using it. I know nothing about organics :frowning:

I just got my ph meter in the mail and did a quick test. My soil is a 8
Asside from running out to a local grow shop and buying a ph lowering product, is there a way to lower it with products at home?
Can I water it with water that has vinegar in it? Of course very little. I would test the water and maybe have it at 6?

How did you test the soil pH? A slurry test is recommended. I don’t even know what it is but I know that’s what you want to do to get a usable soil pH measurement.

Well this is a cheap tester that you stab deep into the soil. I tested it in my kitchen with vinager and then with baking soda in water. It certainly knew which was which.
I added the juice of one fresh lemon to my tap water. My tap water alone is ph of 7.
The lemon juice took 8 ounces of neutral water down to 5.
I diluted the 5 in my normal water with nutrients and watered them good.
They looked ok the next day and even better today. If I have time I will transfer them to one gallon fabric pots today. I will use my good garden soil with lots of pearlite.
I will test all my souls before transfer.
This dam bag of organic potting soil got me!!!
Thinking organs hoody and dam it had ph of 8.
My plants had a little growth in the past few days with the acid, and more green color.
Live and learn. Test soil ph!
Thanks for your replies in this. So nice to know there is help out there!

Ph soil testers are garbage. I don’t think a single person here uses them… Really have to do a slurry test to get the soil pH

Bluelab makes an awesome soil ph pen