Yellowing of leaves curling up and some brown brittle leaves! Any advice?

[jhcj71]

My babies are not doing as good as I had hoped for.I just put them under a 250 w MH after a 4ft shop light. 24/7. The light is about 20 inches above the plants. PH is at 7. Watering only when I think they need it. Spray them once or twice a day. I have not used any ferts yet. These plants are about 5-6 weeks old. Temp stays about 80. humidity is low about 44%. I also have a small fan going on them. My friend says that I burned then with the new light. I think he is nuts cuz the light is 20 inches above. Some say it is time to feed them but only have miracle gro 15-30-15 or Rapid gro 23-19-17. Not sure what to do. any advise will be greatly appreciated.

 

[Sativied]

Stop spraying and give less water (the bulging shows they are overwatered), so they can grow some roots. And yes, it's about time you started feeding. Not familiar with the nutes but I'd go for the one with the highest N (rapid grow).

 

[GanjaHome]

- Start feeding with some high Nitrogene fertilizer (GH 3 Part FloraSeries is affordable and giving good results)
- Avoid Over watering!
- what kind of soil u use? (the plant shows some burn)
- 7 pH is way too alkaline for cannabis plant! 5,9 to 6,5 for soil
- think about transplanting very soon
- start some training and techniques to boost ur yield (LST, Topping...)

Good Luck and happy 420!

 

[jhcj71]

- Start feeding with some high Nitrogene fertilizer (GH 3 Part FloraSeries is affordable and giving good results)
- Avoid Over watering!
- what kind of soil u use? (the plant shows some burn)
- 7 pH is way too alkaline for cannabis plant! 5,9 to 6,5 for soil
- think about transplanting very soon
- start some training and techniques to boost ur yield (LST, Topping...)

Good Luck and happy 420!

Im using sta-green all purpose potting mix with fert. am going to get PH under control but the test chems are old so im just going by what the result are. GOING TO THE HYDRO STORE THIS WEEK!!! Think I should turn lite back to 18/6? or leave 24/7?

 

[GanjaHome]

Im using sta-green all purpose potting mix with fert. am going to get PH under control but the test chems are old so im just going by what the result are. GOING TO THE HYDRO STORE THIS WEEK!!! Think I should turn lite back to 18/6? or leave 24/7?

it will stay on veg anyways the only difference will be ur electricity bill! i tried all kinda light schedules and the best is 16/8 for veg then 12/12!

 

[jhcj71]

it will stay on veg anyways the only difference will be ur electricity bill! i tried all kinda light schedules and the best is 16/8 for veg then 12/12!

Thanks for the tips! I will get everything under control and keep you updated!

 

[GanjaHome]

Thanks for the tips! I will get everything under control and keep you updated!

Welcome to RIU and Keep It Green!