Im guessing calcium def. Id like many more opinions!

For starters ive got a lot into this so i can't afford to mess up...I amfollowing the fox farm the fox farm "diet" feeding schedule using ff soil. My babies r about 2 months to 3 months old...with that being said I have 5 2 vast 2 fast which r in full flower n have been for the last 3 weeks. I also have 5 psycofruits tht r just beginning to hit full flower... I also have 4:1 dutch passion's strawberry coughrange bud. I also have 5 dr. Cribbling incredible bulk, single dianfem cheese and og kush.
Flowering was triggered 2 weeks ago by 24 hrs darkness then 12/12
I am using 5 DE 1000 watt 4 HPS 1 MH. Air cooled of course. I also use a 500 blue lab plug in ph/ ec /tds meter so I always follow every aspect of the feeding schedule EXCEPT I feed only 1 time a week sometikes 2. After ff nutes have been mixed into water i ph to 6.1 to 6.3. Our tap water sits at about 8.1 ph n about 250 to 300 ppm only issue I seem to have is heat during the last 3 weeks most days it runs about 85 to 92 was the hottest it got. I've read when the plant is under heat stress its much more suseptiple to cal def. First ever post so it may take me a moment to post the pics I took but all my plants are starting to show these syptoms except the og

ya, pics would help.
that heat can be a problem. so can adding ferts to ff soil.

pics can be a little deceiving, but it looks like some of your leaves are very dark green. if this is the case and the leaf tips are dying, then I'd say you've over ferted, not just based on the color but also on the use of ff soil, which has fert, and adding more fert. plus the heat probably isn't helping any. people keep making the mistake of adding fert to ff soil. it already has fert in it. the sad thing is that foxfarm doesn't tell people not to buy their products and mix them. instead, they let you buy all you want and kill your plants in the process.

polishpollack said:

pics can be a little deceiving, but it looks like some of your leaves are very dark green. if this is the case and the leaf tips are dying, then I'd say you've over ferted, not just based on the color but also on the use of ff soil, which has fert, and adding more fert. plus the heat probably isn't helping any. people keep making the mistake of adding fert to ff soil. it already has fert in it. the sad thing is that foxfarm doesn't tell people not to buy their products and mix them. instead, they let you buy all you want and kill your plants in the process.

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Thanks....how well does sledge hammer work n how much should I flush..do I add nutes again after flushing?

why flush then add nutes again? don't.
I'd say just flush once with water and don't do anything else. let the soil dry out before you water again. understand though that chances are the plants won't do well from here on out cuz there isn't an easy fix for plants that have been essentially poisoned. just learn the lesson for next time.

I run ffof all the time ....your plants look big enough to where it was probably ok to add ferts you may have added a little to much to them ...the soil comes with enough food for several weeks .....and in my area it seems that ffof soil has been notorious for def .....I've had issues as well as a lot of other growers I know ....if I were you I'd just water normal the next few times then do bloom nutes at lower than suggested on the bottle and feed in some cal mag ......good luck

the feed schedules are really just guidelines, but most people will tell you to use 1/4 the recommended dose. FF soil also has issues with Ph being low. I also see some possible light issues, some of your leaves look like they revegged. could also be strain, hard to tell from pics.

and fwiw, if you want to use bottled nutes, they work better in an inert medium like coco or peatmoss. use soil for organic growing.

Dr.Nick Riviera said:

the feeds schedules are really just guidelines, but most people will tell you to use 1/4 the recommended dose. FF soil also has issues with Ph being low. I also see some possible light issues, some of your leaves look like they revegged. could also be strain, hard to tell from pics.

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Havnt ran into any ph problems using ocean forest seems to buffer just fine no matter if it's straight out my tap or mixed with all the goodies I don't worry about ph in ffof soil ....but I was told they started another plant using different materials in there mixes and quality control was not what it use to be ....not sure how true this is ....but mag def is almost a guarentee with it in my area if it's not amended .....helping a friend with cancer tend her garden and she used ffof straight by itself beautiful plants but il be damned if they didn't get mag def .......so idk we live and learn. Good luck guys happy growing

Thank u all for ur advice...yeah in stead of 1/4 strength I fed less...next spring ill be getting a no till garden which I'm excited for but for the next two grows in stuck with bottled nutes. My plants r huge they are each like4 n a half feet from bucket...some I actually had yo top or bend cuz they were growing against the glass...light quality is pretty much the best u can do with indoor right now other than having the room to put the lights 9 ft from the ground vs 5' 6"...n I never used utes till the plants were a month old other than kangaroos and microbe brew so that the plants roots could take over...ill try n flush 2 gallons through each 5 gal pal tomorrow n see if I see n e improvement in the next few days sense last night before I posted my pics I fed them except my 2 vast 2 fast so I'm sure they have more than enough nutea