DWC, seedling deficiency

xxorezxx

Well-Known Member
Hi there guys,
First time in hydro and dwc and i'm having problem with one of my plants which is turning yellow, I'm not sure what can be the cause of that, because I have the same setup for another 3 plants and they are growing great.
They are 4 days old.
I'm using hesi nutrients and following this table hesi-hydro_schedule.original.png
I'm using 5 gallons pots and PH moves around 5,6 to 6 between days until I adjust it again to 5,6. EC is 1,2, water temperature is around 22°C and 22,5°C, environment temperature is 26°c and I'm using 6w air pumps for each pot. I check all the variables like thrice a day.

I'm not sure which could be the problem because 3 of them looking great but one which seems to grow slower.
yellow.jpg green.jpg

any advice would be great.
 
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