Yellowing leaves with brown spots high rez pic

[unclefester2u]

Hoping some of the more knowledgeable folks could lend a hand in diagnosing this deficiency. Plant white rino, 3 wks flower, soil 1/2 ffof 1/2 sunshine pro, canna nutes, soil ph last time I checked was 6.3-6.4
mostly lower & middle leaves affected maybe a dozen total. Was thinking k but not sure. Thanks for the help

 

[bombadil.360]

to me it looks like either nute burn or excess humidity and hence a fungal infection.

how much r u feeding? how much r u watering? how is the humidity and ventilation?

good luck

 

[unclefester2u]

Thanks bombadil.360 right now I am feeding 3/4 strength, watering using a meter about 2x a week, rh is 40-50% ventilation should be excellent got two 25 cfm fans running 24/7 in a 5x5 tent.

 

[bombadil.360]

it seems like nute burn then, now that I looked closer at the leaves, they are very dark green and the burn started from the tips.

I would go real easy on the nutes, maybe suspend them for a week or two (I'm assuming you feed each watering of 2x a week btw), 3/4 at 3 weeks flowering is too much in my experience, specially in potted plants.

I doubt it is a deficiency, since your pH is right and you are feeding a lot.

but lets hope someone more knowledgeable inputs as well.

much good luck

peace

 

[unclefester2u]

Thanks bombadil.360 I have had one other person say the same. I was only feeding every other feeding, thats what through me off. Might give her a flush and hold off for awhile.
Thanks again

 

[bombadil.360]

don't mention it man, good luck with her recovery

peace

 

[unclefester2u]

Well I finally figured out what was going on. I feel like such a tard, I used Miracle Grow PERLITE and just saw that they have added plant food into it WTF do they put that shit in everything. Anybody know how long it takes for it to not mess up my feeding program. I have flushed some of the affected plants and that seemed to help. Nute burn that was it.
Thanks all who helped

 

[hazy]

that shit's time released for like 2-3 months.

Someone needs to do a MG grow with no added nutes. not me though.

 

[theweedman.fr]

I've done a MG grow with no added nutes, just plain water all the way through.

From seed, vegged for 1.5 months, then flowered.. in the end buckets were still full of so much nutes couldn't really flush the plants properly.

That was my last ever soil grow about 6 years ago. I've been hydro ever since so I can control the nutes my plants get and flush whenever i want.

 

[unclefester2u]

Thanks hazy, theweedman.fr I am really pissed off I have been using canna nutes and good soil and I find out that they put this shit in there. My own fault I guess for not reading the label good enough. Things are look good now though since I know what I am dealing with.

 

[czaczo]

perdon no spik english
Phosphorus i Potassium ?.ph 6.5-6.8 saludos