Is this Mag & Cal or ? deficiency?

How are things looking so far?

Were you able to flush? One issue I had on my last grow was a P deficiency. As opposed to changing the mix, mine was a result of the pH being too high for soilless mix. Where I used to run around 6.0, I started taking it to 5.7 (and even a little lower) on both my water and nutrients, which ended up fixing the problem. Since you're growing in real dirt, you pH would likely be a bit higher, but something you may want to consider.

Farmer Rich

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Originally Posted by Farmer Rich

Were you able to flush? One issue I had on my last grow was a P deficiency. As opposed to changing the mix, mine was a result of the pH being too high for soilless mix. Where I used to run around 6.0, I started taking it to 5.7 (and even a little lower) on both my water and nutrients, which ended up fixing the problem. Since you're growing in real dirt, you pH would likely be a bit higher, but something you may want to consider.

Farmer Rich

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Thanks for the thought. Ph is around 6.4 which I understand is correct for soil. Ph of soil before planting is 6.4.

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No improvement on these girls. There is more yellowing though. 4 days after the flush, I feed with 1.5 tsp Tiger Bloom, 2 tsp Big Bloom & 1/4 tsp CalMag. Today I gave plain water. What's going on? They are now in their 5th week of Flowering. Maybe the problem stems from over fertilizing in the Veg stage. I'm starting to think that Fox Farm's nutrient program is for tomatoes, not cannabis. :-)

Early on, too much phosphorus was given, but I'm wondering about calcium. Have you been using the calmag all along, or was this recent dose the only one you've given? The leaf death is complex with green, yellow, and brown colors in a fairly random pattern. Usually this indicates misusing fertilizer. The only way to know for sure would be to have the leaves analyzed but I don't think that's a good idea.

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Originally Posted by Happy Retiree

Hello... We're growing indoors in soil. Take a look at these photos. Does it look like a magnesium &/or calcium deficiency? The plants just started their 6th week in flower. We fertilize every other watering & pH is always around the mid 6's. PPM in our water is around 60. Day temp in the room is around 75. Thanks for your help.

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This is definitely a huge deficiency probably cal mag...you also state your ppm is 60 what's the ppm after you add your nutes? It should be 860 ... and I have gone as high as 1000 total ppm for the nutes you added and 60 that was in your water when you started...I personal fert every watering in bloom...until 2 weeks prior to harvest then nothing but a flush w/water

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Originally Posted by polishpollack

Early on, too much phosphorus was given, but I'm wondering about calcium. Have you been using the calmag all along, or was this recent dose the only one you've given? The leaf death is complex with green, yellow, and brown colors in a fairly random pattern. Usually this indicates misusing fertilizer. The only way to know for sure would be to have the leaves analyzed but I don't think that's a good idea.

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If you are familiar with the FF Veg & Flower schedule, then you would know if it was too much phosphorus. If you don't, then I would be happy to write it out. The CalMag was given twice. I water with Molasses one time. I watered with SuperThrive one time.

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Originally Posted by bigbud hoop

This is definitely a huge deficiency probably cal mag...you also state your ppm is 60 what's the ppm after you add your nutes? It should be 860 ... and I have gone as high as 1000 total ppm for the nutes you added and 60 that was in your water when you started...I personal fert every watering in bloom...until 2 weeks prior to harvest then nothing but a flush w/water

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I don't measure the ppm - only the Ph. It is usually around 6.4. Water straight from the faucet which is from our well is always around 6.4. The FF schedule calls for nutes every OTHER watering in Flower. Yes, 2 wks prior to harvest I only use straight water.

Weren't you also using
OPEN SESAME N 5%, Phosphate 45%, Potash 19%, Sulphur 2%, Iron .15%, Manganese .05%, Zinc .05%
BEASTIE BLOOMZ 0-50-30
CHA CHING 9-50-10

The middle number is all phosphorus. I think it was too much. Maybe just use the dynabloom for veg perhaps next time. It looks like it could be deficiency, but it's hard to tell exactly because I haven't seen so much P fert given all at once. And yes, there could be some missing nute like calcium, but unless the leaves and soil are taken to a lab and analyzed it is impossible to know what happened. Most people go easier on ferts and this is why I suggest people use happy frog or other soil that has fert in it. I swear, I'm going to start making my own potting soil with fert mix and sell it cuz it would make life so much easier. Anyone up for that? If I make a mix and package it, would this interest anyone out there?

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Originally Posted by polishpollack

Weren't you also using
OPEN SESAME N 5%, Phosphate 45%, Potash 19%, Sulphur 2%, Iron .15%, Manganese .05%, Zinc .05%
BEASTIE BLOOMZ 0-50-30
CHA CHING 9-50-10

The middle number is all phosphorus. I think it was too much. Maybe just use the dynabloom for veg perhaps next time. It looks like it could be deficiency, but it's hard to tell exactly because I haven't seen so much P fert given all at once. And yes, there could be some missing nute like calcium, but unless the leaves and soil are taken to a lab and analyzed it is impossible to know what happened. Most people go easier on ferts and this is why I suggest people use happy frog or other soil that has fert in it. I swear, I'm going to start making my own potting soil with fert mix and sell it cuz it would make life so much easier. Anyone up for that? If I make a mix and package it, would this interest anyone out there?

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I used those solubles in the last crop - Let's call it Crop 1. This is a newer crop - Crop 2. I didn't use any of the Open Sesame, Beastie Bloomz & ChaChing, just Grow Big, Tiger Boom & Big Bloom in Veg or Flower. In Flower, I followed the FF schedule except I added CalMag 2x & Molasses 1x. Every other watering was plain water. BUT, from the 1st week in Flower the plants started showing signs which leads me to believe that the FF schedule for Veg is too strong. At the end of the 4th week in Flower, I flushed till the runoff was up to 6.0-6.2. It had gone down to 4.8+. You know I use the FF Ocean soil, right?

I just started another crop (Crop 3) & for veg this time, I cut way back (30%) on the FF schedule but added 3 ml of SuperThrive. I added these nutes every other watering & they are super beautiful plants. Today we put them into Flower - White Widow & Jack Flash.