light burn

Hey, first time grower here. Growing on a 4 (5gal) bucket DWC system. Specs: 1x1x2m (3.2x3.2x6.5ft) grow tent 540W 6 piece COB led grow light, 300W true consumption Led distance From plants 90cm (35in) Reverse Osmosis water Water temperature 19C (66F) / 20C (68F) Temperature 20C (68F) / 23C...

If anyone can help diagnose i would appreciate it. Have 2 plants same strain autoflower week 9 of flower. I think it has nitrogen toxicity but im not nuting it. Just foxfarm ocean forest which i heard runs hot. Some rapidstart root growth accelerator, fish shit, b-52 (sm dose). Nitrogen toxicty...

23 day old GG Auto. Bracts appeared 1 week ago. Was growing like a champ then this. PH, RH, temp, EC/ppm are all good. Moved the light up and added more micros to see if it solves the problem. Another GG Auto, same conditions, looks beautiful. Light and micro issues are my first thoughts...

I noticed the tips of some leaves getting yellow as well as some brown spots. Only a few of the leaves are affected. Could it be light burn? Or is it a nutrient deficiency, Ph, etc. (I changed my light last week to a ViparSpectra P1000 LED from a 600w philzon LED.)

Double post, my bad. Please close thread

So I believe the 110v150w red bulb was a heat lamp after all I'm a rookie dont laugh anyways I need to start a light/dark schedule and stay on it while in veg. My dumbA$$ self was leaving the 5 gallon bucket in the sun all day and then in the evening putting in my 8x8 shelter under that red heat...

Hi Guys, First time grower here and this forum has been a useful resource for me. Unfortunately I'm having some kind of issue so now having to post myself.. Can anyone tell me whether this yellow dotting on leaves is light burn, nute burn or perhaps calcium / magnesium deficiency? It looks...

Hi all, I was hoping someone might be able to assist in my first indoor grow. To give some background I’m growing under a spider farmer sf2000, planted in Biobizz light mix. 10 days since planting and 7 days since sprouting. The issue is that the leaves look to be curling slightly by the stems...

Bag seed strain 20 inches under 400w HPS with 100 true watt supplemental LED’s, Fox Farm Trio Nutrients with Coco/Fox Farm Soil, humidity 35%, ph 6.8. If it’s nutrient burn, should I flush it with plain water?

Greetings fellow growers. Not hugely experienced, this is only my third grow and first time I have seen this issue. Based on looking at a couple dozen web sites and at least a couple hundred photos of various ailments, this looks to me like either light burn or nutrient burn. I am hoping for...

So I went in to water my ladies this morning to find this.....majorly disappointing. :(. I noticed one or two leaves had browning tips that were curling upwards otherwise she has been super healthy and powering through the beginnings of flower, stacking and stinky. Im running an ES 180 LED at...

Hello guys, I noticed the leafs of my girls are pointing up I’m using 12x cree cxb3590 @50W in 4x4 tent Should I raise the light? Distance is 10 inches to top colas

JUST finished this grow box earlier today, so happy to have it done in time, this weather is garbage and I feel a wet fall coming. So, Two questions (I’ll post in another thread if I need to, still new here) 1. Do I need to put the lights closer to the plant? (Are they okay lights) 2. It’s...

So..? I screwed up... Not sure what the issue is just yet. Still scouring for something that sounds and looks right. I have 9 plants. But two... Are having cause for concern. I am using a room in my house, not a tent. Has a vent built into the ceiling out, I keep the door wide open and the room...

Ok. So I've got about 9 plants going, but only two are having issues. The two in question developed this after a transplant. Both have these orangey brownish spots on them. One is droopy and the other isn't. I transplanted and it was time to feed it as it had not got anything for three days and...

My plants are 2 weeks into flowering, and they have stretched like crazy. The new growth is lighter green than the old growth, but the highest leaf tips seem to be especially yellow. I'm growing in coco/perlite (%15 perlite) and I'm using 170ppm Cal-mag mixed with 450ppm of GH Trio (so a total...

Coco+perlite, Canna A+B+cal mag, 3 gallon fabric pots, 500w quantum board, 3x6 closet 12/12 lights starting 8'th week of flower, photo period kandy kush average RH 55%, daytime 77 Fahrenheit, nighttime 64 Farenheit. Ok, so new grower, I've had one harvest so far and am close to my second one...

At first I thought it was a cal def until I saw some newer growth with these brown spots also on mid and bottom fan leaves. As im doing more research on the blotches I see it could be p/k def or a rust burn? Its only on one plant and It first started to appear after a 2nd foliar feed with MgSO4...

Hey guys, Having trouble identifying the source of a leaf discoloration / weakness problem. Problem started way back in week 1 of grow. Yellow streaks on leaves started appearing. (almost like they were brushed yellow). Leaves were also dry and crispy to the touch. I use a 1200 watt led that...

Hi there! I'm about 6/7 weeks into flowering and I'm noticing a lot of my top leaves are turning yellow. Also. This is a blackberry kush strain, is it normal for leaves to turn this black/purplelish color (I know that sounds like a stupid question, but I'm genuinely asking)? Ultimately I'm...