First autoflower and... FAIL ? Help !

[Era374]

Hello everyone!
So i have next problem...

Wanted to grow some autos named "Gorilla" from some local breeder, Gorilla Gluex Indica x Ruderalis ~27 THC, as it says on their website.
After popup i put them in 1.5l pots with Plagron Lightmix and watered them with distilled water, they started good for few days.
And put them in 1.5x3m growbox under 4 LED lamps 50w each. 20hrs of light.
But then they stuck in grow. First they were stretching, and then stuck.
Humidity was 70-80, temp 23 at first , 23-27 later.
I was feeding them Aptus startbooster and Superthrive. Very low dosage.
Ah and my water EC1.2. It if filtered, but without osmosis.

After 7 days they were still the same as at day 3-4, but stretched and started to fall.
So i thought,problem was the light. I put there 4 more 50w LEDs and 400w MH. SO 8x50w + 400w MH, still 20h of light.
Same nutes, only Aptus startbooster and Superthrive(lalf of them was getting it, half not, for experiment),EC 1.2 Ph ~6-6.2, 70% humidity and 25-27 temp.
Watered them ~once per 3-5 days with 100-150ml of water, as soil was wet sooner.

New lamps helped, but its still fucked up, or smth...
I wanted to put them outside, when they will have at least 5-7 nodes and transplant them into 10l pots.
But it will be 30 days soon and they look like THIS:
Some of them better, some not.
Just say if u need more photo!

 

[Era374]

up!)

 

[TrippleDip]

Hey, what's the npk of your feed because superthrive and startbooster don't have any macro nutrients..

 

[Era374]

Hey, what's the npk of your feed because superthrive and startbooster don't have any macro nutrients..

Characteristics of the soil:
Peat moss, perlite.
pH (EN13037): 6 - 7
E.C. (1:1,5): 0.7 - 1.1 mS/cm
Prefertilised with 1,5 kg/m³ mineral fertiliser (NPK 12-14-24)

Startbooster and Superthrive is the only nutes i used.
Haven't used All-in Liquid, or NKP, cuz soil have it and i dont want to overdose. And they dont seem to have some deficiency... or ?

 

[JoeBlow5823]

I dont think you can grow in straight up peat moss. Why not use some fox farm ocean forest or something similar? Already has most the nutes you need.

 

[TrippleDip]

And they dont seem to have some deficiency.

That was my first thought.. They look pretty healthy, they still have their cotyledons which would have been used as a food source if they were starved.

Edit: maybe it is not enough light. I have 400w in 8 square feet, and you have 600w in 49?

 

[Hawg Wild]

That was my first thought.. They look pretty healthy, they still have their cotyledons which would have been used as a food source if they were starved.

Edit: maybe it is not enough light. I have 400w in 8 square feet, and you have 600w in 49?

Agreed. I just noticed that. So 800w? I had initially read it as 1.5x3 feet. That's not nearly enough light for your space. Maybe 3 of the 400w metal halides evenly spaced and run parallel to each other. Also, all LEDs are not created equal, so spectrum and the intensity of the diodes are critical variables in the equation that are missing from your provided description.

 

[Era374]

That was my first thought.. They look pretty healthy, they still have their cotyledons which would have been used as a food source if they were starved.

Edit: maybe it is not enough light. I have 400w in 8 square feet, and you have 600w in 49?

I got 4,5 m2 = 49 ft2, yea and 400w MH + 400w with LED's
So its 800w overall...
I thought it will be more than enough for early stage.

Agreed. I just noticed that. So 800w? I had initially read it as 1.5x3 feet. That's not nearly enough light for your space. Maybe 3 of the 400w metal halides evenly spaced and run parallel to each other. Also, all LEDs are not created equal, so spectrum and the intensity of the diodes are critical variables in the equation that are missing from your provided description.

Thats some shitty lights from Aliexpress...
Its 4000K and one lamp have like 240 diodes.

I need 3 of the 400w from seedling, or ?
I wanted to transplant them outside when they ready, like after 2-3 weeks of normal growth after seedling.

 

[Hawg Wild]

I got 4,5 m2 = 49 ft2, yea and 400w MH + 400w with LED's
So its 800w overall...
I thought it will be more than enough for early stage.



Thats some shitty lights from Aliexpress...
Its 4500K and one lamp have 12 diodes.

I need 3 of the 400w from seedling, or ?
I wanted to transplant them outside when they ready, like after 2-3 weeks of normal growth after seedling.

So are they 50 watts from the wall or just "50 watt equivalent"? That's a huge difference. From the pic, they look like strips? How long are they?

 

[Era374]

So are they 50 watts from the wall or just "50 watt equivalent"? That's a huge difference. From the pic, they look like strips? How long are they?

I dont know rly, it ust says "Power: 50W". As i said its some shitty lamps...
Yeah, its strips and one have 150cm lenght and 7cm width.

 

[Hawg Wild]

I dont know rly, it ust says "Power: 50W". As i said its some shitty lamps...
Yeah, its strips and one have 150cm lenght and 7cm width.

Yeah man those are not putting out many lumens at all for 5ft. lights. I use 60w 4ft led 6000k strips with 3 flat rows of diodes for seedlings and they can be almost touching (2-3") at 6200 lumens per light. I think your biggest issue is a lack of light intensity and ability to penetrate the canopy with a substantial enough amount of light to induce growth.

 

[Hawg Wild]

General rule of thumb for top of the line current LED diode technology (Samsung lm301b/h) is 32w per square foot, or so that's what I kept coming across when switching over to LEDs. Even cutting that by 1/3 to account for the metal halide, you'd still be looking at over 1000w of top LED tech for that space. That's a huge room running on about as much light as I would use in 1/3 the space, considering the quality of the strips.

 

[Hawg Wild]

For comparison, my auto tent is 32"x32" and I'm running a 150w Mars TS1000 framed by two 24w t5s, two 24w 2ft 3000k led strips, and a 35w 3500k led ufo over the shortest plant for a total of over 280 actual watts in about 1/7 the space you're trying to light. I'm at about 40w/sq ft but I'm also not using top of the line diodes.

 

[Era374]

For comparison, my auto tent is 32"x32" and I'm running a 150w Mars TS1000 framed by two 24w t5s, two 24w 2ft 3000k led strips, and a 35w 3500k led ufo over the shortest plant for a total of over 280 actual watts in about 1/7 the space you're trying to light.

Thats a lot of important information!
So I need a lot more (or with much quality) lights +switch to 6000K?

 

[Hawg Wild]

Thats a lot of important information!
So I need a lot more (or with much quality) lights +switch to 6000K?

6000k is a strictly veg spectrum, generally speaking. For flowering, you want around 3000k. A lot of people go with 3500k or mix and match. Honestly, with such a huge space, I would ditch the strips and use them only for side lighting and step up to cobs or quantum boards.

 

[f series]

Buy samsung f series strip lights, build a couple 2*4 fixtures. Line em up, and grow some weed

 

[Era374]

6000k is a strictly veg spectrum, generally speaking. For flowering, you want around 3000k. A lot of people go with 3500k or mix and match. Honestly, with such a huge space, I would ditch the strips and use them only for side lighting and step up to cobs or quantum boards.

And i need only for veg, they will bloom outside.)

Buy samsung f series strip lights, build a couple 2*4 fixtures. Line em up, and grow some weed

Need to Google this.

 

[f series]

And i need only for veg, they will bloom outside.)


Need to Google this.

Flowering light is way more important, you might as well just grow these plants start to finish outside

 

[Hawg Wild]

And i need only for veg, they will bloom outside.)


Need to Google this.

If you're just starting them, then you don't need nearly as much light. I misunderstood or maybe didn't read enough of your post if that info is there.

 

[Hawg Wild]

There's a lot more that can go wrong transplanting autos and moving them in and out than just starting them outside.