Potential Deficiency in Flower?

Hi all,

I've been working on my second first grow. lol. I grew a couple of harvests about 5 years ago but I wouldn't consider myself experienced at all. So I've been growing Chocolate Chunk which I got through seedsman. They generally looked great throughout veg but into harvest they started to have some browning and spotting on fan leaves. My uninformed and inexperienced opinion is that it's a calcium deficiency, but I'm obviously not sure.

They've been grown in 70% coco coir and 30% perlite. When they were first started the coco had been soaked with 1 tsp/gal General Hydroponics CALiMAGic. During their seedling stage, they got 1 tsp Advanced Nutrients Micro, Grow, Bloom, and CALiMAGic per gallon. As they progressed I moved to 2 tsp/gal Advanced Nutrients Micro, Grow, Bloom, and CALiMAGic. Before flower I trained them into a screen of green net and finally switched them to a 21.6 hour on, 12 hour off schedule based on article about how 24/12 flowering can speed up flowering time (https://www.weedworldmagazine.org/2017/06/28/grow-faster-with-long-light-cycles-written-by-professor-lee/). It took a minute (okay, several hours. I'm no mathematician) to convert the 24/12 schedule into something that didn't require me to reset my light timer schedule every week.

Within flower they got moved up to 1 tbsp Advanced Nutrients Micro, Grow, Bloom, CALiMAGic and progressively higher levels of Fox Farm Tiger Bloom (built up to 1 tbsp/gal). I wish I could give more specifics about exactly how the nutrient levels progressed, but my log file got corrupted after I had moved it from my computer to an external hard drive.

They've currently been in flower at 21.6 on/12 off for 51 days. What do you all think?

Take better pics with natural lighting. People on here won't respond with seeing a purple plant, but looks like alot of N to me with those pics.
EDIT: Welcome to RIU

They look burnt from overfeeding and you should have stuck with 12/12 for flowering.

Burnt and nutrient lock out! Post some pics under natural light. Just to clarify, you’re giving a Tablespoon (Tbsp) of Grow, a Tbsp of micros, a Tbsp of Bloom, and a Tbsp of Tigerbloom And a Tbsp of Calmagic? What is the EC of the fertilizer solution? I’m guessing 3 plus. According to my spreadsheet that’s around 400ppm N, 550ppm P, 600ppm K, 400ppm Ca, and 140ppm Mg.

Thanks for all the feedback everyone. Sorry about the purple tint on the pictures. I'll try to figure out a solution because the light in there is pretty dim and I can't move them all stuck into the screen like that. Thanks for the welcome, @ZuuTeD614 ! And yes, @Merlin1147 , Tbsp each of Micro, Grow, Bloom, CALiMAGic, and Tiger Bloom. As far as EC, I have no idea. But from the feedback so far it seems like I fell for the rookie "More Nutrients is More Better" mistake.

rrockwel said:

Thanks for all the feedback everyone. Sorry about the purple tint on the pictures. I'll try to figure out a solution because the light in there is pretty dim and I can't move them all stuck into the screen like that. Thanks for the welcome, @ZuuTeD614 ! And yes, @Merlin1147 , Tbsp each of Micro, Grow, Bloom, CALiMAGic, and Tiger Bloom. As far as EC, I have no idea. But from the feedback so far it seems like I fell for the rookie "More Nutrients is More Better" mistake.

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Blurple lights out / flash turned on then.

Based on what you said you probably have serious nutrient lock out. Your ec is so high the plant is just saying fuck it and drinking water and not touching nutrients. In turn your ec gets worse... less water same nutrients. You should really do your homework on feed strength

These were taken today. I would say that both of these plants are at about 110% on the feed schedule (heavy feed) using a combo of 3 to 4 different nutrient lines. NFTG, Cutting Edge, and Veg Bloom. Sometimes botinicare for some berrysweet or hydroguard. Entering week 5 of flower. Do your homework their is no exact way to do it or no exact combo of products that works for everyone. But you can have buds like this if you don't give up and ask the right questions. Read read read

rrockwel said:

Thanks for all the feedback everyone. Sorry about the purple tint on the pictures. I'll try to figure out a solution because the light in there is pretty dim and I can't move them all stuck into the screen like that. Thanks for the welcome, @ZuuTeD614 ! And yes, @Merlin1147 , Tbsp each of Micro, Grow, Bloom, CALiMAGic, and Tiger Bloom. As far as EC, I have no idea. But from the feedback so far it seems like I fell for the rookie "More Nutrients is More Better" mistake.

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Indeed you did. I think we all learned that lesson at one point or another. Those fertilizer charts are developed using optimum perfect growing conditions with maximum lighting and then the sales and marketing department add 30% to boost sales. You really should get an EC and pH meter. It will make your life and for sure the life of your plants so much better. I would also shy away from obscure lighting schedules until you have a solid successful baseline in your specific growing environment to compare them to.

For future reference, I use this guide to help determine any issues that I may be having:

Thank you so much, @Minnewildsota. Saved right to my grow logs folder!