toxicity or deficiency?? fungus,mites??

Hey guys,
so today after lights on i went to check on my ladies and found about 50% of the leaves have these small brown spots accompanied by purplish red stems..bud leaf tips are curling and 1 is actually half yellow.
i have been feeding using Big Bud up until a week ago and started using Nirvana at half dose about 4 days ago..i have been using big bud at every watering and roughly every 2-3 days which is when the top inch or 2 of soil was dry..theres lots of drainage...twice i used both nutes at the same time to increase phosphorous..maybe a noob mistake..lol..and also used some bloom feed i bought at home depot every 3rd or fourth feeding..the heat has been up in the 30-35 celcius range for almost 2 weeks and there wasnt much i could do about it as i dont own an air conditioner..the most i can do is exhaust out the room but the air going back in was just as hot due the heatwave we have been having..rh is usually between 50 and 60%..am i over feeding? or is it a deficiency?...i inspected for bugs and doesnt seems to be any..i have been reading and am thinkin it may be a phosphorous toxicity..could that be it?..all i can do is guess at this point as i am not very experienced and this is my 2nd photo grow

they are both sativas and am on week 4 as of tomorrow..ph is usually around 6.5

any help would be greatly appreciated

I would check for spider mites on the underside of leaves. That peppered pattern is how they roll.

macsnax said:

I would check for spider mites on the underside of leaves. That peppered pattern is how they roll.

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I just checked numerous leaves with my 60x loupe and thought i may have seen just 1..but that was it..wouldnt i have seen more for such damage to be done?..how can i get rid of them if thats the issue?

darterjay said:

I just checked numerous leaves with my 60x loupe and thought i may have seen just 1..but that was it..wouldnt i have seen more for such damage to be done?..how can i get rid of them if thats the issue?

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I just had a small mite issue as well and I bought a pesticide called Green Cleaner from a local hydro store. It’s 39% soybean oil and 19% sodium lauryl sulfate worked well for me. Shouldn’t hurt to get some and use as a bi weekly maintenance. Also I would give them pure pH’d water for a couple waterings and see if that helps.

darterjay said:

I just checked numerous leaves with my 60x loupe and thought i may have seen just 1..but that was it..wouldnt i have seen more for such damage to be done?..how can i get rid of them if thats the issue?

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I can tell you that your lights is too intense, you need to raise it or turn it down, those curly leaves and soon to be foxtailed tops show it. As far as the peppered pattern, have you sprayed anything? Also mites will hang in certain areas more than others, even if there's bite marks, it doesn't mean that's where they are atm. Just for your own piece of mind I would go through your plants really thorough.

Cwmoore577 said:

I just had a small mite issue as well and I bought a pesticide called Green Cleaner from a local hydro store. It’s 39% soybean oil and 19% sodium lauryl sulfate worked well for me. Shouldn’t hurt to get some and use as a bi weekly maintenance. Also I would give them pure pH’d water for a couple waterings and see if that helps.

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macsnax said:

I can tell you that your lights is too intense, you need to raise it or turn it down, those curly leaves and soon to be foxtailed tops show it. As far as the peppered pattern, have you sprayed anything? Also mites will hang in certain areas more than others, even if there's bite marks, it doesn't mean that's where they are atm. Just for your own piece of mind I would go through your plants really thorough.

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I may have jumped the gun in a panic but i just made a solution using unconcentrated dawn dish soap and warm water..sprayed every leaf top and underside thoroughly..ive read they dont like wet climates and the medium is still moist from watering last night..will water again tomorrow..i hope it will help..if not then i will have learned something new either way..fingers crossed

darterjay said:

I may have jumped the gun in a panic but i just made a solution using unconcentrated dawn dish soap and warm water..sprayed every leaf top and underside thoroughly..ive read they dont like wet climates and the medium is still moist from watering last night..will water again tomorrow..i hope it will help..if not then i will have learned something new either way..fingers crossed

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also turned lights down to about 75% intensity..i was thinking the lights were too bright right now
Thanks guys!

Run your light at night when its cooler, and off during the day when its hot to help with temps. The fact it was so hot at such a detrimental point of their growth and bud development -and the fact you are using all bloom nutrients will make them look like they do. Do you use a base fed or anything other than bloom boosters to feed with? If not thats a major issue. Both of those bottles you are using are just 1 part of a multi part feed.

HydroRed said:

Run your light at night when its cooler, and off during the day when its hot to help with temps. The fact it was so hot at such a detrimental point of their growth and bud development -and the fact you are using all bloom nutrients will make them look like they do. Do you use a base fed or anything other than bloom boosters to feed with? If not thats a major issue. Both of those bottles you are using are just 1 part of a multi part feed.

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I couldnt do anything about the heat but to use fans for circulation and exhaust due to the heatwave we had for 2 weeks..air was the same temp goin in as it was coming out..lights on at 5:30 pm and off at 4:30 am...i was thinking the soil (promix) should have whatever else they need..if not then maybe i could just add a few inches of soil if i notice any other problems..the feed i use is 15-30-15 but the ingredients label tells me it has everything else they would need...im not looking for top notch bud,just some good smoke to get me through to my next harvest..but i am doing everything i can to get the best possible smoke..money is tight right now so i am just getting whatever i can whenever i can and try to make the best of it..ive been buying it for 25 years so if i can get enough out of them to last a few months until my next harvest using clones then im a happy camper

darterjay said:

I couldnt do anything about the heat but to use fans for circulation and exhaust due to the heatwave we had for 2 weeks..air was the same temp goin in as it was coming out..lights on at 5:30 pm and off at 4:30 am...i was thinking the soil (promix) should have whatever else they need..if not then maybe i could just add a few inches of soil if i notice any other problems..the feed i use is 15-30-15 but the ingredients label tells me it has everything else they would need...im not looking for top notch bud,just some good smoke to get me through to my next harvest..but i am doing everything i can to get the best possible smoke..money is tight right now so i am just getting whatever i can whenever i can and try to make the best of it..ive been buying it for 25 years so if i can get enough out of them to last a few months until my next harvest using clones then im a happy camper

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2 years ago, I was new and on an extremely tight budget. I ended up just using MaxiBloom from GH. It's basically decent from seed to harvest and it's dirt cheap because it's powder. You may want to do that and a bottle of Calmag. Combined CAD that's $40 and it'll last you a full year of growing 2-3 plants perpetual (2-3 plants flower and veg, 6 total).

You may not need the CalMag, but my tap water here is pretty clean so I had to add it.

I have since moved on to more complicated things but I used it for a full year and was getting roughly .5 lbs per plant per harvest.

HTH, cheers!

after trying the soap and water method twice..they are just getting worse..anyone know how long it would take for spider mites to kill a plant?

Spider mites hatch every few days. You gotta continously treat for a full life cycle to kill an infestation.

Neem oil is the safest way to treat from what I read. I have not had to deal with an infestation ... yet...

Hth

darterjay said:

after trying the soap and water method twice..they are just getting worse..anyone know how long it would take for spider mites to kill a plant?

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Unless its a momma, most dont worry about the mites killing the plant as much as they do the finished buds being covered in web, dead mites, and bug poo.
I'd hit em hard right from the gate with some pyrethrum (either fogger/bombs or from concentrated spray). Hit em once, wait three days, hit em again to nuke the babies from the last spraying. 3rd times a charm though. Follow up with an alternative scheduled preventative maintenance (neem oil/sulfer burns/etc) to use to avoid future infestations. They can build a tolerance to one method real quick so switch it up. If you are in flower, Id suggest limping into harvest with some bugs and dont spray anything on em OR chop it all down and bomb the whole setup just to ensure total eradication. Start your next run on a clean slate and stick with the preventatives there after. "An ounce of prevention is worth a pound of cure". Best of luck!

MJCanada said:

Spider mites hatch every few days. You gotta continously treat for a full life cycle to kill an infestation.

Neem oil is the safest way to treat from what I read. I have not had to deal with an infestation ... yet...

Hth

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ive grown autos for a few years and never Ever had a problem..until i started photo grows ffs..you can certainly tell they are females with the "fuck you" attitude..lol
im doing a scrog right now and the stretch is done..so i was thinking about gettin them the hell out of there and removing the screen because i cant really get at them like i want to..wash them separately leaf by leaf for a few days which is NOT something im looking forward to..would that work or is it something i would have to do continuously until harvest?..will the stems still straighten towards the light and slowly lessen light exposure to the lower buds?

HydroRed said:

Unless its a momma, most dont worry about the mites killing the plant as much as they do the finished buds being covered in web, dead mites, and bug poo.
I'd hit em hard right from the gate with some pyrethrum (either fogger/bombs or from concentrated spray). Hit em once, wait three days, hit em again to nuke the babies from the last spraying. 3rd times a charm though. Follow up with an alternative scheduled preventative maintenance (neem oil/sulfer burns/etc) to use to avoid future infestations. They can build a tolerance to one method real quick so switch it up. If you are in flower, Id suggest limping into harvest with some bugs and dont spray anything on em OR chop it all down and bomb the whole setup just to ensure total eradication. Start your next run on a clean slate and stick with the preventatives there after. "An ounce of prevention is worth a pound of cure". Best of luck!

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ya im in flower 4 weeks but they are sativas and unknown genetics,they were freebees from nirvana..so i have no idea how long it will take..i may have another 2 months to go,do you think they would last that long if untreated?

darterjay said:

do you think they would last that long if untreated?

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I really couldnt say either way with any confidence.

darterjay said:

ya im in flower 4 weeks but they are sativas and unknown genetics,they were freebees from nirvana..so i have no idea how long it will take..i may have another 2 months to go

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I know you say they are Sativas, but those leaves tell otherwise. You could limp into the finish line, but will the harvest be worth it? Going by the pictures provided at week 4 of flower, probably not.
"You gotta know when to hold em, know when to fold em, know when to walk away, and know when to run." -The Gambler