Weird deformities on my plants

Hi all, I am a first time grower and have currently five plants but two of the have weird deformities and a slow growth.

I use coco from biobizz mixed with perlite 70/30 and Biobizz Activera, Growth and calmag, about half the recommended amount at the moment. The grow tent I use is 80x80x160 with a 180 watt Hans panel in veg mode about 30cm above the plants . The humidity is around 70 - 80 percent and the temperature is around 22 - 25 Celsius(71-77 F).

The plants with the deformities are super lemon kush and did germinate without trouble but had very slow growth at the beginning. Maybe someone could say if I should keep them and what to do or if its a waste of time. I uploaded pictures of all three super lemon skush, one seems okay but the other two I don't know. Thank you very much.

The first and third pics look like a burn but if the seeds were slow they might be trouble. I wonder if it's your light?

Thank you for your reply MustGro, in the first week I only gave them Tapwater with a pH of 6.2 and the light was dimmed to I think 30 - 40 percent. Now since half a week I feed them with half the strength of the biobizz scheme. Do you think I should try to dimm the light more or put the lamp higher? The other three plants do fine

That first plant does have an odd brown spot on it, almost a little burn looking. The second one in question looks like genetics. It's odd to me as the symptoms don't even appear similar in the photos.

I've ran into this issue my last 3 runs from seed. Rinse that coco, it will be full of salts and particles. Take those pots to a sink or basin, flush the medium out with pH'd water until it's running out the bottom.

Feed with 0.5mL/litre calmag of your choice, watch those babies green up on their new leaf set.

Ty for your answers, I will wash the coco and give them some calmag. Should I give them other nutrients as well?

This brown spot is there since it popped out of the shell. Maybe a piece of the shell cutted into the cotyledon or gave it some sort of wound.

Rakklezek said:

Ty for your answers, I will wash the coco and give them some calmag. Should I give them other nutrients as well?

This brown spot is there since it popped out of the shell. Maybe a piece of the shell cutted into the cotyledon or gave it some sort of wound.

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They don't have a real need for a tonne of nutes yet, just baby them til you get some new growth that's green and in good shape.

Ah okay, thank you . I would give your post a like, but I don't find the button ^^'

How old are they?

From seed they are about 14 - 15 Days old

Rakklezek said:

Ah okay, thank you . I would give your post a like, but I don't find the button ^^'

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Gotta get your first trophy then the likes and messaging members options open up for you.