Experienced grower help required

Reaching out for help after spending hours trawling help posts.

I have 2 autos and 8 photos in one room the autos are approx 3 weeks ahead of the photos and are almost done. Issues started with the first auto and has spread from one plant to the next to the next.

Room details as follows

Strains: gorilla skittlez x4 cookies kush x4 sour orange x1 skunk #1 x1

Room size: 9ft x 3.6ft

Light: 1x Mars Hydro SP3000 led 1x mars tsw 2000 1x 315 cmh on light mover rail

Medium: canna terra pro soil

Pot size: 12.5 ltr smart air pots

Exhaust: 8" ac infinity /fox carbon filter

Intake: 6 inch rvk

Sms twin fan controller

Light schedule: 12/12

PH 6.5

Temps 26c

Humidity 50%

Nutrients: general hydroponics Flora Gro, Bloom & Micro / cal mag / seaweed extract / mad farmer moab....alternating watering between nutes ie nutes added one day then 2 days later water only ph 6.5 then nutes added next feed and so on.

Images

Close up of leaves

Any help appreciated in advance thanks people

overfeeding, Ca deficiency for sure.

have you scoped for bugs?
what ppm do you feed at?

If they are almost done it sounds like they are fading and thats OK

Thanks for the reply... I checked for bugs yesterday with a loup and couldn't find any. I've had mites in the past so have a good idea what to look for and blasted the room before the grow with bleach etc so I'm confident it isn't a bug problem. I don't have a bluelab truncheon anymore so am reliant on a cheapo thing that I don't really trust but Ppms were on the low end last time I checked around 600ppms. To be honest I haven't been checking the Ppms as I've been sticking to the guidelines on the bottles and they have been looking great so I thought I was OK but I guess not!. What do you recommend I do next? Thanks

ComfortCreator said:

If they are almost done it sounds like they are fading and thats OK

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It's the photos at the back I'm most worried about as they have at least 3 more weeks maybe more and whatever this is spreads and kills the leaves off really quickly

Blaze187 said:

What do you recommend I do next? Thanks

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i'm not a dirt guy, sorry. but the spreading to other plants makes me think it's some type of critter.

good luck!

A few are showing calcium and a few are showing Magnesium issues with some possible Prosperous issues too.

budman111 said:

A few are showing calcium and a few are showing Magnesium issues with some possible Prosperous issues too.

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I've had a look at the various charts and your correct they do point to a cal/mag issue. What I don't understand is how that is possible when I am giving them cal/mag supplements?. Also doesn't explain the problem moving from one plant to the next. I'm completely baffled. I did try to flush both the autos and it did absolutely nothing. I think my next move if nobody has any fix is to chop the two autos and keep an eye on the 1 photo that has the early signs of whatever disease it has and if that progresses to get worse then maybe chop that one too before it ruins the rest of the crop. Sounds drastic but I don't know what else to do?.

Blaze187 said:

I've had a look at the various charts and your correct they do point to a cal/mag issue. What I don't understand is how that is possible when I am giving them cal/mag supplements?. Also doesn't explain the problem moving from one plant to the next. I'm completely baffled. I did try to flush both the autos and it did absolutely nothing. I think my next move if nobody has any fix is to chop the two autos and keep an eye on the 1 photo that has the early signs of whatever disease it has and if that progresses to get worse then maybe chop that one too before it ruins the rest of the crop. Sounds drastic but I don't know what else to do?.

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Don't chop anything till it matures
It isn't a "disease"

Blaze187 said:

I've had a look at the various charts and your correct they do point to a cal/mag issue. What I don't understand is how that is possible when I am giving them cal/mag supplements.

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. Did you start the cal mag when the plants were asking, or as a type of standard feeding you do? Ya know what they say "too much of a good thing causes lockout".

Herb & Suds said:

Don't chop anything till it matures
It isn't a "disease"

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OK herbs and subs I hear you... What do you think I should do next? Thanks

As a part of my feeding regime wanderer. Is that the wrong way to go?

What are you PH ( ing ) at ?
Is it matching or near medium ph range ?

If not ranged accordingly you will lock out some elements. Also noted “ the Claw “ on your leaf and shine. Which points to nitro excess ( especially in flower ) - fade is to be expected as older leaf is spent.
Some excess in one element can affect uptake of others. Calcium is deficient.

Too much mag locks out cal, too much of something else could be locking your mag. Just throwing it out there. Not alot of experience here, never needed cal mag yet.

Budzbuddha said:

What are you PH ( ing ) at ?
Is it matching or near medium ph range ?

If not ranged accordingly you will lock out some elements. Also noted “ the Claw “ on your leaf and shine. Which points to nitro excess ( especially in flower ) - fade is to be expected as older leaf is spent.
Some excess in one element can affect uptake of others. Calcium is deficient.

Click to expand...

Hi budz budda I aim for 6.5 pH every time whether on a feed or just water thanks

Blaze187 said:

Reaching out for help after spending hours trawling help posts.

I have 2 autos and 8 photos in one room the autos are approx 3 weeks ahead of the photos and are almost done. Issues started with the first auto and has spread from one plant to the next to the next.

Room details as follows

Strains: gorilla skittlez x4 cookies kush x4 sour orange x1 skunk #1 x1

Room size: 9ft x 3.6ft

Light: 1x Mars Hydro SP3000 led 1x mars tsw 2000 1x 315 cmh on light mover rail

Medium: canna terra pro soil

Pot size: 12.5 ltr smart air pots

Exhaust: 8" ac infinity /fox carbon filter

Intake: 6 inch rvk

Sms twin fan controller

Light schedule: 12/12

PH 6.5

Temps 26c

Nutrients: general hydroponics Flora Gro, Bloom & Micro / cal mag / seaweed extract / mad farmer moab....alternating watering between nutes ie nutes added one day then 2 days later water only ph 6.5 then nutes added next feed and so on.

Click to expand...

Looks like you're pretty far into flower and from what I've heard some fading in lower leaves is normal at that stage and shouldn't effect final results. This would also explain why you're seeing it on multiple plants that are all getting into later stages of flower.

Are your autos more effected than your photos?

Just to let everyone know I appreciate your help!.. I really don't like pestering people like this but I really want to get to the bottom of this so I can take out the guess work and really understand whats going on!.. Cheers