middle of flowering

[Kmiller86]

hey whats up guys, got these three autoflowers that are in the middle of the flowering cycle and I have some issues going on a few leaves on one plant is showing signs of a phosphourus or nute burn not really sure the margins of a few leaves are yellow I also have some brown tips of the leaves as well as cracked or broken parts of leaves. on a different plant I have a few leaves that show what I believe to be cal issues the leaves have turned a yellowish color as well as red/brown spots. a few leaves are curled upward kind of making the taco shell shape. i am not sure what is going on i have checked the soil ph and none of the plants have surpassed 7.0 in soil the run off go slightly above 7 but not more than 7.15. any help or advice would be appreciated. if i am missing vital info for a helpful diagnoses or would need pics of the leaves or whatever let me know it wont take long to get some pic and attach to this topic, thanks

[PigSquishy]

Photos would help a lot, but every time I think of a plant having a problem... the best place I always start is with the basics... Temp, humidity, how far away the plant is from the light... I look to see if those spots are burn spots from the lights being to close, middle of flowering... when was the last time you flushed?

[ZigZag]

Pics would help for sure. But from your description there's likely more than one issue at play.... likely both nutrient and environmental. Sounds like you may have your lights too close, or they are not getting enough water. or maybe they are too close to blowing air_ like a fan. all/any of the can cause discoloration and leaves "taco_ing"_curling up at the edges, wind burn can cause tips to brown, turn up and make leaves narrow. Humidity under 45% at this stage can also cause symptoms like you described. If there's some type of nutrient lockout going on then I'd just flush them well and start over with 1/2 strength flowering nutrients. And check to make sure the environment is in line with happy plants. Cheers!

[Kmiller86]

I will get some photos up tonight I appreciate the inputs I raised the lights so I eliminated that from the factor. I have tho let humidity go I stopped filling the humidifiers and the humidity has been below 20 for a few week and I am starting to think that is the issue I will put pics up tonight and see what you guys think. I am really leaning to humidity now.

[Kmiller86]

hey whats up guys sorry I didn't get pics up until tonight but I am going to load them up I have three autoflowers i think I have a few issues going on and if anyone has any valuable input or reasons for why I am seeing this feel free to let me know

[Kmiller86]

Photos would help a lot, but every time I think of a plant having a problem... the best place I always start is with the basics... Temp, humidity, how far away the plant is from the light... I look to see if those spots are burn spots from the lights being to close, middle of flowering... when was the last time you flushed?

I uploaded photos

[Kmiller86]

Pics would help for sure. But from your description there's likely more than one issue at play.... likely both nutrient and environmental. Sounds like you may have your lights too close, or they are not getting enough water. or maybe they are too close to blowing air_ like a fan. all/any of the can cause discoloration and leaves "taco_ing"_curling up at the edges, wind burn can cause tips to brown, turn up and make leaves narrow. Humidity under 45% at this stage can also cause symptoms like you described. If there's some type of nutrient lockout going on then I'd just flush them well and start over with 1/2 strength flowering nutrients. And check to make sure the environment is in line with happy plants. Cheers!

I posted some photos

[PigSquishy]

As much as I expected to see the tips dried from lack of humidity, I just don't see that... What I do see though my first impression is pH... I would calibrate my pH meter and I would double check my pH readings as a starting place, then I would look to the EC-TDS-PPM's because on some of those leaves I see a nutrient issue going on. Now low or high humidity levels can mess with a plant's calcium uptake and since calcium is the highway for all the other nutrients in a plant... So you can see how humidity could in turn affect the nutrients then I hope, because it could also be two separate issues or something else, since if the pH is out of range or if there is an issue with calcium it can in turn affect all the other nutrients because of how things work together.

[Kmiller86]

As much as I expected to see the tips dried from lack of humidity, I just don't see that... What I do see though my first impression is pH... I would calibrate my pH meter and I would double check my pH readings as a starting place, then I would look to the EC-TDS-PPM's because on some of those leaves I see a nutrient issue going on. Now low or high humidity levels can mess with a plant's calcium uptake and since calcium is the highway for all the other nutrients in a plant... So you can see how humidity could in turn affect the nutrients then I hope, because it could also be two separate issues or something else, since if the pH is out of range or if there is an issue with calcium it can in turn affect all the other nutrients because of how things work together.

i have gone as u said and checked my ph run off. I too thought it kind of looked like ph fluctuation, this is only happening in my smallest plant the other two are so i can write light burn or heat burn off. so the run off was low something in the 5s so I made a water of 7ph and when i watered next i gave it that water. i read the ph reading and it was 6.8 so i thought i was good i flushed also i use fox farm nutes so i used sledgehammer to flush and break up any salts. still have a lot of yellowing going on almost think it potassium or phosphours deficiency. i use distilled water and my buddy told me that i shouldn't worry about cal-mag cuz the nutes have them in moderation in the fox farm nutes, i don't use tap water cuz my tds is 60ppm and a ro is out of question right now until i figure a better water souce out the distilled jugs is it, i am going to add a photo of the plant in question I'm going into week ten. so i am getting pretty close to cutting them down and i really would like my first official grow to be a good one yet this problem i am having make me feel like the potentciy and what not is going to suffer

[Kmiller86]

hey I forgot to add something about the other two bigger plants, the leaves are green got a little bit of nute burn but they are very dry and stiff, I have humidity running at 40-45 using a 1.7gal evap humidifier, the leaves also have brown spots through out the leaves any idea what is going on there?

[Sonnyhad]

hey whats up guys, got these three autoflowers that are in the middle of the flowering cycle and I have some issues going on a few leaves on one plant is showing signs of a phosphourus or nute burn not really sure the margins of a few leaves are yellow I also have some brown tips of the leaves as well as cracked or broken parts of leaves. on a different plant I have a few leaves that show what I believe to be cal issues the leaves have turned a yellowish color as well as red/brown spots. a few leaves are curled upward kind of making the taco shell shape. i am not sure what is going on i have checked the soil ph and none of the plants have surpassed 7.0 in soil the run off go slightly above 7 but not more than 7.15. any help or advice would be appreciated. if i am missing vital info for a helpful diagnoses or would need pics of the leaves or whatever let me know it wont take long to get some pic and attach to this topic, thanks

You might try to aim for closer to 6 for you ph. It change everything for me.

[Sonnyhad]

Also. If your tap water ppm is less than 150. You have good water! Use it! I use city water and just let it air out for a few hours or more.