Mid-flower problems

Hey everyone, around week 7 with this kosher kush and I'm having problems on the leaves which seems to be spreading.
It started to show on leaves from the first set of branches and now it has moved up to the next set of branches...

The soil is biobizz allmix and I'm feeding quite heavy with every watering (every 4 days or so) :

2ml per liter Silicon+
1.3ml per liter GH Floranova
2ml per liter AN Big Bud
2ml per liter AN Overdrive
0.6ml per liter Dyna-Gro FP

Last time I watered with pH ~6 water with a half dose of Cal-mag but I think it's worse now.
What do you reckon I should do ?

its not a problem at all. notice fruit trees outdoors? the leaves get a little crispy towards the end of season, right when the fruit is ripe.
As your plants are using up the stores of energy lower un needed anymore growth will shed. you're so close to finish adding anything outside of your program would be detrimental in my opinion. some feed right up to the end, that would prevent this of course, then add on a longer cure to make it taste right. yours look good!. enjoy!

I'd be feeding only water at 6 weeks in my pro mix.

I have used AN for many years - got a lot of salt build up on the roots when feeding them as directed by AN... 2ml of Big Bud and Overdrive is recommended dose from AN - I only use half the their recommended doses.

Feeding of Big Bud this late in flowering my be some or all of the problem. AN feeding schedule directions say to feed Big Bud only during 2,3, and 4.

Looks like they may have a tad of N toxicity I would only continue feeding with stuff hi in P and K drop the N

Actually the more i look, open pics in another tab and zoomed them, im guessing what you are seeing is probably normal for 7th week hell those are almost done another week or 2 i wouldnt worry about it let them go great healthy looking plants.

tpc_mikey said:

Actually the more i look, open pics in another tab and zoomed them, im guessing what you are seeing is probably normal for 7th week hell those are almost done another week or 2 i wouldnt worry about it let them go great healthy looking plants.

Click to expand...

Yesterday the photos wouldn't open and show... Seening them today I agree - They will make it to harvest...

Thanks for the input guys. I think I will cut back on the N (DynaGro FP) and Big Bud and continue with the Floranova (bloom base) and Overdrive...see how it develops.

IMO, that is a LOT of products. Mixing different lines can get tricky if you're unsure about your final calculations on your total feed.

Dyna FP + silica is already a very complete and balanced feed. Cal-Mag shouldn't be needed and adding it can cause issues. The Big Bud is a decent product and could work well with the Dyna and Silica but if I were to choose an additive from AN I'd go with their Bud Factor X and possibly Nirvana for transitional times.

I'm not a fan of Overdrive. Plants should ripen naturally and as they use less nutes feeds should be adjusted accordingly. I don't think you need the additional Floranova either.

What your plants are displaying is a micro lockout. Necrotic spots form on top leaves if Mn deficiency occurs and its usually due to large amounts of Mg present in the soil/feed.

They're nearing the finish line so just simplify your last couple of feeds and go light. You should be fine. They look good.

How close is the light and what about temps.

I wouldn't be feeding them anything. You got some burning going on and the leaves that are getting the most radiant heat from the lights are showing it first. Those leaves are so dark they're close to black indicating a lot of stored N. In my experience it's the lower, oldest fan leaves that start yellowing when everything is proceeding as nature intended.

They're getting close to the end so I'd just give them water with a dash of OverDrive if you've got it.

davillains said:

Hey everyone, around week 7 with this kosher kush and I'm having problems on the leaves which seems to be spreading.
It started to show on leaves from the first set of branches and now it has moved up to the next set of branches...

The soil is biobizz allmix and I'm feeding quite heavy with every watering (every 4 days or so)

Click to expand...

Well, here's my 2 cents. You're obviously all set with N, the sooner you get that out of that plants system the better. Looks like you have an old nute burn, but more recently a K deficiency. Cal-mag can aggravate a K deficiency. Maybe I'm wrong. But I would keep up with your base notes and supplement with something like potassium sulfate.