leaf burn

I’m assuming it’s either nutrient burn or light burn. Im using led lighting. 4 separate sf1000. White widow. I only have four more weeks till harvest

I’m on day 6 of flowering, and my leaves have started to yellow, developing “burnt” tips and some brown spots. Seems like it’s a mobile deficiency since it’s starting from the bottom, but not entirely sure. Using the Athena Pro Line with 5.8 pH water. Any help would be appreciated!

Planted directly in FFOF, didn’t have time to amend. Have been watering slightly once a day. Day 2. Light is ab 24in 60%dimmed. 18/6 light schedule.

Hey guys, I've been vegging this bagseed sativa dominant lady for 9 weeks, flipped to flowering about 5 days ago. Micro grow(first) with CFL: Veg: 3 x 23W 6500K = 69W Flowering: 4 x 23W 2700K + 1 x 23W 6500K = 115W LST, topped once + lights close to the plant. She grew short due to the weak...

I began to have signs of spider mites. So I made a solution of 1 tbsn baking soda, 1 tspn soap, and 4 cups water. Sprayed my plants twice in one day and this is what I get. Maybe the solution was too strong. I'm going to prune some affected leaves. But the pistils have turned this dark colour...

It was under the sunlight the other day, and when i took it back in, I noticed the leaf looking dry and it got more worse now, what do you think is the problem?

Buongiorno, This is the first time i grow anything. I am growing 2 random bag seeds. I am at the flowering stage of 3 weeks i guess. I have a 100cm*60cm*40cm stealth box and at the vegetative stage and begining of flowering until yesterday i used 9 * 14w, 1521lumen, 6500k philips led bulbs, now...

Posting some pictures below, I will answer any further questions as needed or provide any other information that would further a diagnosis. I just want to see if someone can tell me by directly looking at the pictures first. I’m having some browning at the tips including yellowing, some what...

So I'm wrapping up week 3 headed into week 4 of flower and I had a few days (4 at the most) where I was maybe 5-10 minutes late on each occasion opening the tent and I had some leaf and bud burn result. Sick about this but nothing I could do to get home any faster. Just wondering how much damage...