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Hydroponics
caimsux

NFT tomato leaf curling

15 years ago

I am growing a few tomato plants under a 600W Agro light, Ph around 6, EC around 2.5. The leaves on the new stems start curling down and then the whole stem spirals down. As new stems develop, the spiralling ones come back to normal but the new ones go through the same symptoms, first they spiral down and then slowly they come back to normal. My guesses would be either temperature too high (30 Celsius at day, 24-25 at night) or lack of oxygen (the NFT does have a sprayer feeding it and more than 3% slope, also its a very small tube - 2 plants). Any help will be truly appreciated; links to photos below, first one of the entire plant, second of the problem area:

http://public.giftmania.ro/costin/BigJimmy1small.jpg

http://public.giftmania.ro/costin/BigJimmy2small.jpg

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