Autopot Delahaze - Problem with growth

[nakedrg23]

Hey guys

1st time growing in autopots.

System is as follows:
Number of plants: 4 in autopots and 1 in another pot
Space: 1x2x2
Lighting: 1 250 watts HID for vegetative then plan to move to 2 250 watts HPS
Medium: 50% coco 50% pebbles. The other pot will be only coco with a layer of pebbles only
Nutrients: Canna
One 6 inch extractor with carbon filter
One 5 inch air intake fan
I am also using a oil filled radiator with a thermostat which switches the heater on when temp goes as low as 19 celcium.
Ive also used a small bag of Co2
Seeds: 3 delahaze, 1 diesel, 1 wappa

Calendar:

Used paper towel method. 2 days in roots came out. Ive put them straight into the pots. 2 days after all of them sprouted.

5 days in good progress. I had a couple of days when the temp dropped to 10 and some which went up to 35 but other than that the temp was ok. Humidity was low around 35.

15 days in very little progress. 30 days now again in very little progress. Plants are only 4 inch tall. 4 of them are in the autopot pots the other one is in a smaller pot and plan to repot it when it gets bigger.

Can someone tell me what the problem is?? Couple of plants have 1-2 really small yellow leaves but no other problem.

PH has always been between 5.8 - 6.2. EC is always below 1. I added some rhizotonic 3ed week couple of times 1/4 of the suggested dose.. no change

Please help.. dont know what to do. thinking of getting rid of them start fresh..

Really appreciate some help.

Let me know




I used paper towel method

[nakedrg23]

Forgot to mention. Lights have been on 18-6.

[GreenThumbJack]

Forgot to mention. Lights have been on 18-6.

plants look good fellow

what space are you growing the plants in ?
not sure what (1x2x2) means

[nakedrg23]

plants look good fellow

what space are you growing the plants in ?
not sure what (1x2x2) means

1 meter wide 2 meter length 2 metre high

I think they look ok too.. but 30 days only that big is worriyng to me. no?

[GreenThumbJack]

the space is way to big for the light you have,
a 600w hps covers a 1m x 1m x 2m room so you need to reduce the room size down and buy a 600w hps

because the setup, you have is not going to give you very good results,

[nakedrg23]

im using a big space because im expecting them to grow big.. not 2 meter high big but i thought that would be good for air temp etc.. rather than be crowded.. you reckon that is why they are not growing for a while now?

[nakedrg23]

Also keep in mind that I have a heater in there and will have a reservoir as well

[B.A.BARACUS]

Also keep in mind that I have a heater in there and will have a reservoir as well

Get a 250 over each 2 of the plants & make sure your res is outside the tent otherwise your res temps will raise to the same as room temps, resulting in root rot...

Sent from my SM-G930F using Tapatalk

[GreenThumbJack]

yes, the problem is no light reflect back on the plants, so a lot of the light is wasted,
often i veg my plants under a 250w hps and i keep the hood 6" above the canopy, the light footprint is about 1ft square

keeping the hood 6 inches will keep the plants healthy but i think your pots are 1ft square so its not going to work ( looking at the pics )

[nakedrg23]

thanks barakus i didnt think of that. My main problem now is that its been 30 days since root and it looks very small.. not sure what the problem is..