LED Grow Distance and light intensity from Seedlings Day 1

Hi All!

On Day 1. :slight_smile:

My small seedling pots are only a couple of inches from my LED lights. Is that okay?

(Viparspectra PAR Series 450W 90pcs 50-60Hz).

I have the White and Blue Spectrum turned up to exactly half. The Red Spectrum is turned up only 10%.

Soil: Organic Potting Mix. Seeds were soaked in purified water for three days (covered) prior to planting in small seedling pots and placed in grow tent this morning.

Small Grow Tent with fan, and exhaust fan attached to carbon filter. (As pictured.)

It gets between 25-30°C (77-86°F) according to my detachable wall thermometer. A bit warmer than recommended. I hope that is ok.

Growing Afghan.

Any advise would be much appreciated. Thanks in advance!

1 Like

@SpaceAce. It sounds like you have the light too close. For a reference a lot of people will start seedlings with a cfl. I would recommend moving the light up. Even in flowering most lights don’t go closer than 12 inches. A picture of the light with the plant would help. I’m new at this so I could be off base a little. Others will be by to correct me if I’m wrong. @dbrn32 @Screwauger @blackthumbbetty. In the mean time fill out the attached support ticket. It helps to get the basics out of the way.

Welcome to the forum. Great people here with sound advice.

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
4 Likes

IMO that’s too close. If it were me I would turn the intensity to low if the led has to be that close.

3 Likes

Hey bud. Light should be at least 24inches away from seeds. You dont wsnt to stunt the growth or over heat them

3 Likes

Read the book that came with the light. It tells you different setting for each stage of life i would follow it for the first time i have 2 of the same light.

5 Likes

@Bubblehead thanks! Posting my info below as per the support ticket. :slight_smile:
I looked into getting florescent tubes but couldn’t find any locally. I didn’t realise standard cfl’s would have sufficed. Since I don’t have a lamp anyway, I hope the LED lights will still be fine. Maybe I should only use the white spectrum? Thanks for tagging dbrn32, Screwauger, and blackthumbbetty!

@Screwauger Ah, I knew it! I felt as though a couple of inches was too close, despite some websites suggesting it for LED lights. (They did not stipulate that distance for freshly planted seeds though, so the fault is squarely on me.)

@Mr.FckAVERAGE Got it! I moved them down. I managed to snap these two shots just before the stroke of midnight — where the lights go off (via a timer) for their very first 6 hour sleep cycle.

—-

  • What strain, Seed bank, or bag seed
    Afghan from ILGM

  • Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF

Organic Soil

  • Vessels: Pots, Grow beds, Buckets, Troths

Seedling Pots

  • PH of Water, Solution, runoff (if Applicable)

Unknown. (Watering with Moores ultrapure — “no chemicals, no salt / sodium chloride, or bacteria”

  • PPM/TDS or EC of nutrient solution if applicable

N/A (using organic soil)

  • Indoor or Outdoor

Indoor Grow Tent (80cm x 40cm x 80cm).

  • Light system

Viparspectra PAR Series 450W 90pcs 50-60Hz

  • Temps; Day, Night

30°C, 25°C respectively. (77-86°F) 18 hrs light / 6 hrs dark cycle.

  • Humidity; Day, Night

No idea.

  • Ventilation system; Yes, No, Size

Yes. 6” Ventilation kit (Vent Fan + Carbon Filter Duct). 160mm Clip Fan.

  • AC, Humidifier, De-humidifier,

No

  • Co2; Yes, No

No

1 Like

@Killadruid thanks. Sage advice! I have the booklet sitting on the kitchen bench. Not sure why it didn’t occur to me to read it yet.

3 Likes

Congrats on starting your project @SpaceAce. lots of great people on here to help you out. good luck in your grow!

2 Likes

Come check out my journal i got going on and u can see some results with them lights. I am running an hps also tho. Also i would get a humidity guage so u know where ur running there u can even pick up a cheap reptile one just so u have a referance guide

these were pretpretty cheap on amazon. Sorry about the mechanic stained hands lol.

3 Likes

Looking much better with light now.

@monkman thanks! I am astounded by the great community here. And humbled by the warm welcome. So glad too see it legalised in Michigan. They will be voting to have it legalised where I live this month (to be put into effect in July). We have the numbers, so fingers crossed.

@dbrn32 phew I dodged a bullet there. Looks like I meandered in here just in a nick of time. What an awesome place! I feel more confident my seeds will sprout now. I hope the organic soil isn’t too toxic for them at this early juncture.

@Killadruid I plan on checking out your journal straight after writing this! I hope I can find it. That humidity gauge is awesome. I bought one! I want to buy a whole handful and start sticking them on everything. I also bought a 4 in 1 soil tester so I can compare the temperature of the soil with the temperature of the air. Plus, PH, light and moisture seem important. I’ve spend a lot on my setup, I don’t want to start skimping on things now.

I already foresee that I’m gonna need a taller grow tent.

4 Likes

Thank u for the likes hope u liked my journal. Almost there. I know it gets exspensive ive spent around 2k$ usd. On this grow but that includes my electric and everything. But with this grow i should be able to make my money back on not buying weed at 200 an ounce. Here is my humidity controler. I right now have my dehumidifier hooked to it.

thisthis would help u later on when u get to flowering to keep ur humidity down

2 Likes