ReefKief
420 Member
Hello everyone!
My Lemon Auto has started showing some burning on its first set of leaves. She's exactly 14 days old from sprouting. I was wondering if this is due to overfeeding, underfeeding or maybe heat stress? The last few days have been quite hot and the temps in my grow tent were at 30°C MAX. Usually the temps are about 21°C-26°C. RH is usually 50%-80% now that I use a humidifier.
The soil I'm using is BioBizz Light-Mix and I'm also using BioBizz nutrients. I followed the official BioBizz nutrient feeding schedule so I started giving my plant nutrients during the second week (day 10). Since it's an autoflower, I chose to give it only 1/8 of the recommended dosage. I mixed up 0.25ml of Bio-Grow with 1L of tap water. The PH was 6.7 and the ppm were at 377. I watered my plant with this mixture across 2 days.
As soon as it started showing the burned tips I switched to plain water. I gave it enough water to get a little runoff (for the first time) and the ppm of the runoff was 2100!! I thought the ppm of the runoff should be similar to the ppm of the water/nutes mixture. I'm not sure what is going on, maybe that's just the case for coco and not for soil?
The plant is still growing really fast and the new growth is looking healthy. I'm not sure if I should flush the plant, give it more nutrient or if I should just wait it out. I'm just worried that more leaves might start to get burned too.
I was also thinking about starting LST today but I'm not sure if that is a good idea because of the burning of the leaves. What do you guys think? Would LST stress out the plant even more?
Let me know what you guys think.
BTW I'm using a full spectrum LED light. It pulls about 110W.
Thanks in advance
My Lemon Auto has started showing some burning on its first set of leaves. She's exactly 14 days old from sprouting. I was wondering if this is due to overfeeding, underfeeding or maybe heat stress? The last few days have been quite hot and the temps in my grow tent were at 30°C MAX. Usually the temps are about 21°C-26°C. RH is usually 50%-80% now that I use a humidifier.
The soil I'm using is BioBizz Light-Mix and I'm also using BioBizz nutrients. I followed the official BioBizz nutrient feeding schedule so I started giving my plant nutrients during the second week (day 10). Since it's an autoflower, I chose to give it only 1/8 of the recommended dosage. I mixed up 0.25ml of Bio-Grow with 1L of tap water. The PH was 6.7 and the ppm were at 377. I watered my plant with this mixture across 2 days.
As soon as it started showing the burned tips I switched to plain water. I gave it enough water to get a little runoff (for the first time) and the ppm of the runoff was 2100!! I thought the ppm of the runoff should be similar to the ppm of the water/nutes mixture. I'm not sure what is going on, maybe that's just the case for coco and not for soil?
The plant is still growing really fast and the new growth is looking healthy. I'm not sure if I should flush the plant, give it more nutrient or if I should just wait it out. I'm just worried that more leaves might start to get burned too.
I was also thinking about starting LST today but I'm not sure if that is a good idea because of the burning of the leaves. What do you guys think? Would LST stress out the plant even more?
Let me know what you guys think.
BTW I'm using a full spectrum LED light. It pulls about 110W.
Thanks in advance