4 plants, 15 days old, what's wrong?

Cococoir and perlite.
Under one 600 watt hps lamp was 40 cm, now is 90cm above plants.
temp 20-26c
Humidity 60-70%
Feeding rhyzotonic. From canna. I think I overwatered them in the beginning, feeding Cana ryzotonic everyday day, so I flushed them today and there was yellow water coming out smelling like piss or ammonia. Any thoughts? These are autos, tangiematic, Gelato, blue dream and amnesia, should I start over? Are they looking good for 15 days or are they doomed?

I also forgot to mention that I think it's a combination of of overwatering, overfeeding and light burn from hanging the lamp too close in the beginning

yes the main problem could be lumens shock
and the big pots dont help for root oxygenation ..

maybe feeding to early or light to intence perhaps

More then likely drowning the roots locking everything out....plants that small don't need much water at all.

Wonder if you have root rot too smelling the ammonia....I think you loved your plants to death. Back off on water AND feeds. Water about a shot glass or 2 full of water only for a few days but make sure you allow the soil to dry. Plants in soil need both dry AND wet cycles.

nutter film technique said:

maybe feeding to early or light to intence perhaps

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I think maybe feeding too much. Since it's coco with no inherent nutrients...you have to feed early. But really low like 200-250ppm.
JD

JohnDee said:

I think maybe feeding too much. Since it's coco with no inherent nutrients...you have to feed early. But really low like 200-250ppm.
JD

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Good catch. Didn't see the coco part.

JohnDee said:

I think maybe feeding too much. Since it's coco with no inherent nutrients...you have to feed early. But really low like 200-250ppm.
JD

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fair just looks like it could cem burn on the ends of the leaves or light burn but aslo could be too much water as well...!

nutter film technique said:

fair just looks like it could cem burn on the ends of the leaves or light burn but aslo could be too much water as well...!

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Interestingly...too much light can promote nutrient burn by increasing transpiration. as the plant draws new nutrient solution up to those top leaves...the nutrients get concentrated. Oila Nutrient burn from too much light. Maybe that's what happened.
JD

havnt worked out how to like a post yet but i like the knowlege!! cheers

JohnDee said:

Interestingly...too much light can promote nutrient burn by increasing transpiration. as the plant draws new nutrient solution up to those top leaves...the nutrients get concentrated. Oila Nutrient burn from too much light. Maybe that's what happened.
JD

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would this be a safety mechanism to stop drying out?!?!

nutter film technique said:

havnt worked out how to like a post yet but i like the knowlege!! cheers

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Your post made me believe that you felt they were connected...but not sure how. So I just supplied the missing information.

"Like" and "reply" are below lower right corner of posts and I believe they are only visible or active when you're signed in.
JD

To like you need to be a member for 48 hours and achieve 50 messages.

Definitely over watered, they are drowning

TheSadVeryBadMadGrower said:

To like you need to be a member for 48 hours and achieve 50 messages.

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aaah cheers and like

Hard to say, could need rain water flush, a fan,( hydrogen peroxide at 1%) is a seed grower

they look VERY WET
ya have to do a wet dry cycle or roots will rot..
either that or the soil is to strong.They are not reaching or stretching much so they are getting nutes ok it would seem
Id go with to much water..

I thought MY 5 day old girls looked like shit, cant get RH over 37%:



My prob is lack of humidity, yours is overwet and excess nutes. 3rd cup is just soil warmin up. Wedding cake x purple punch seedling has part of the seedcoat stuck to one of the first set of leaves still.

I got 15 litre pots, i water them every 3 days until water comes out the bottom, waiting for the soil to dry about half a finger deep, then water again.
Should i water less when i water? like only around the plant, like 1 glass of water? Does the soil need to stay dry for 1 day?

Thanks for all the replies, this is my first grow.
I will use canna coco A+B
I also use some rhizotonic from canna.
I feed tapwater that sits in a bucket for at least 3 days so the chlorium evaporates.
I don't check ph, i think my tapwater is around 7.6
These are autos, from start to finish in a 1.20x1.20x2.00 cm tent with a 600 watt full spectrum HPS.