Sick seedlings

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hi I am doing my first indoor auto grow in soil and I have two plants that are looking ill... I know I should have used smaller pots and maybe coco instead of canna professional. The seedlings are around 1w5days since breaking the soil, 7 of them look of although growth is slow.

One is yellow and small
The other is drooping far too much.

9 plants under 2x 400w hps ballasts around 2.5ft away from the plants. Was feeding 2.5ml of motha pucks Route 66 per 2litres of water between 9 plants each day (the soil does dry out, about an inch down).

Humidity is 50%
Temps are 24-26 degrees Celsius during lights on and 19-20 during lights off
Running 20/4
 
Did I read this right that your running 800w of HPS 30 inches over these seedlings?

I'm gonna guess here. Way too much light. Your seeing light stress. Turn one off, and raise the other.
Seedlings don't need much light at all, I usually dim my cobs as much as possible for the first couple weeks.
 
Depending on the soil mix, usually don't feed nutes the first week or two as well, maybe a little cal/mg. So could be seeing a little overfeed as well.

Straight coco, we start feeding right away.
 
Will do that now, I am completely new to growing from seed usually use cuttings... the are also in 7gal pots so I didn’t think one light would cover it. I have four sanlinght s4ws could these be of any use?
 
Will do that now, I am completely new to growing from seed usually use cuttings... the are also in 7gal pots so I didn’t think one light would cover it. I have four sanlinght s4ws could these be of any use?
If you've taken clones before, the light requirements are similar, most all energy is focused downwards till a root system is established, then it'll go up and out. When I ran a 2 room setup, clones were under a set of fluorescents till rooted, really didn't need much more than that.
 
977AA30B-6D04-4769-AD8A-D526F7B19086.jpeg For some reason I thought they needed full light ... what should I do from now on? (Bare in mind I’m 2 weeks in) and most look like this? Cut lights for one week? Maybe just use one or two sanlights for a week? Stop all nutes for a week? Sorry for all the questions, just want them too grow
 
View attachment 1013007 For some reason I thought they needed full light ... what should I do from now on? (Bare in mind I’m 2 weeks in) and most look like this? Cut lights for one week? Maybe just use one or two sanlights for a week? Stop all nutes for a week? Sorry for all the questions, just want them too grow

I haven't run your soil, so look first, but it should have plenty of nutes for the first few weeks, so pH'd water, maybe a little cal/mg. As to lighting, a 400 MH is enough to veg out a 4x4, if you can switch bulbs (some ballasts will do both) go to a MH and run 1 light, and I'd get it up fairly high, 40 inches or more. I'd probably run the 1 MH bulb in flower as well, bringing in the HPS when I see flowering signs.

We didn't discuss the rest of your setup, so hard to speak to several things. Tent? Room? Airflow?
 
2.5x3m room

Passive intake

6inch 1m long mountain air filter (currently off)

Going to start 9 more plants in 1.5months (Dwc)
 
I take it these 9 don't take up a lot of space at this point, and you go back to 2 lights during flower, 2 400 hps are only gonna cover a 4x4 area for flower. And that will be on the lower end. We're dealing with autos here, so they can get by with less photons for longer period. But those 2 lights are not going to be enough for that space.

On the very low end of 25 watts per square foot (flowering hps photos closer to 50w) your gonna need a lot more lighting to make use of the entire space.
I've got 8 autos just started now, and will be working overtime to keep them rangled in a 4x4. Have made the switch to LED, couldn't afford to grow otherwise. I'd have 2 600s in that tent if I was running hps. Maybe just a thoueee
 
These are 600w hps digital ballasts with 600w bulbs in just turned down to 400w, I am planning on running 2 more of these along with 4x sanlight s4w LEDs to supplement the light... eventually going fully DWC with 20 plants... does this sound do-able?
 
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