Do you think this is magnesium deficiency?

[the123321]

I have 2 miracle berry autoflower plants that are on day 33 that have what looks like magnesium deficiency.


Here are the details.

• 32x32 tent with kingbrite 240w led quantum board on like 80% power like 30" from the plants and the temperature is around 77 - 81f with around 50 - 60% rh.
  
  
• 2 plants in 50% 50% coco perlite in 3 gallon fabric pots.
  
  
• The biotabs line for the nutrients with 2 biotabs and startrex and mycotrex and bactrex and silicium flash following the just add tap water guide https://biotabs.nl/pdfs/organic-growing-manual-en.pdf and I also do real growers recharge 1 time every 2 weeks. I water every day around 1/4 gallon per day.
  
  
• I water with only tap water that has ascrobic acid vitamin c powder in it to remove chloramine from the water with ph of 5.8-6.2 on there.

I do not use calmag. The biotabs guide does not list that you need it. I tried putting a little epsom salt in water in a spray bottle that I sprayed the plants with like 3 different times and I tried putting a little epsom salt in the water I feed the plants with like 2 times. I plan to use biobizz light mix soil instead of coco in the future. What do you think? I want to make sure this looks like magnesium deficiency before I do more to work on that on there.

 

[Jimmythenugg]

Don't know the biotab line too well but understand it requires certain amendments.
This been very helpful in past..
Your call but good luck.

 

[the123321]

Thanks. I think it is a magnesium deficiency though it may be a nitrogen deficiency. I put a little epsom salt and water in a spray bottle and sprayed the leaves today and I plan to do a small top dressing tomorrow with coconut water and recharge on there.

 

[low_and_slow]

That is not a nitrogen deficiency. I suspect it's very high pH causing potassium lockout.

You mentioned using a silica product; those typically raise the pH a great deal. I'd really take a close look at that fertilizer cocktail and try to use only the minimum necessary products to achieve desired NPK ratios. Additives should be stopped immediately as they may cause major pH swings and nutrient lockout.

 

[Proph]

Thanks. I think it is a magnesium deficiency though it may be a nitrogen deficiency. I put a little epsom salt and water in a spray bottle and sprayed the leaves today and I plan to do a small top dressing tomorrow with coconut water and recharge on there.

Why do you think it's magnesium deficiency? In the pic you posted of the plant, do you see any brown rust spots on the leaves. Did you compare your pics to the chart posted? Because the leaves on your plant look nothing like the magnesium deficient pic on the chart. But there is one pic on that chart that looks exactly like the leaves on your plant. You should really consider learning that chart.

Why are you planning to add more stuff like recharge and coconut water when you dont know what the current issue is yet? That can make things worse pretty quickly. Also, it's a good idea to take action as soon as you see discoloration on any leaves. Asap. The plant in the pics has been suffering for a while and it's not going to be a quick/easy fix.

 

[the123321]

Thanks. The plants started having a little yellow between the veins like 1-2 weeks ago and I have been trying epsom salt in a spray bottle. I thought that calcium is the 1 that has the brown spots. I have been looking on websites for deficiency images. The way the leaves looked when this started to now looks like magnesium to me though that is why I asked. The ph of the water I use is 5.8 - 6.2 and the biotabs line says you do not need to measure ph and ec when you use biotabs. I am using a quantum board led and that with it in coco would make me think it is more likely magnesium which is what the leaves looked like on there. If you mean it looks like the sulphur or zinc I do not think it is 1 of those. I read that sulphur starts from the back of the leaf to the tip and this started near the tip. I read that zinc is abundant in tap water and I use tap water. I am going to do a top dressing tomorrow of silicium flash and that is listed that it is 4-3-3 and I hope that with the coconut water and recharge works on there. The coconut water is something I was planning to add anyway 1 time per week. I do recharge 1 time every 2 weeks and I am planning to start doing the coconut water this week for it on there.

 

[Proph]

Thanks. The plants started having a little yellow between the veins like 1-2 weeks ago and I have been trying epsom salt in a spray bottle. I thought that calcium is the 1 that has the brown spots. I have been looking on websites for deficiency images. The way the leaves looked when this started to now looks like magnesium to me though that is why I asked. The ph of the water I use is 5.8 - 6.2 and the biotabs line says you do not need to measure ph and ec when you use biotabs. It is in coco that often has magnesium deficiency from what I read. That is why I thought magnesium though I though posting here for recommendations for it. I am going to do a top dressing tomorrow of silicium flash and that is listed that it is 4-3-3 and I hope that with the coconut water and recharge works on there. The coconut water is something I was planning to add anyway 1 time per week. I do recharge 1 time every 2 weeks and I am planning to start doing the coconut water this week for it on there.

Look at the charts.. Do you see brown rust spots on the leaves in the pic you posted? Are there brown rust spots on the chart for Magnesium and calcium issues? At some point you will need to stop guessing what what your issues are and learn these charts and nutrients. You are about to fry those plants if you top dress them.. Ive said it bunch of times.. a deficiency DOES NOT mean add more nutrients. Your posts says you are following the buo tabs water only chart.. But that's not true if you are adding Epsom salt and other things to the water, and about to add an all purpose top dress..
Here is another chart.. Take a look at it.. Compare the leaves on the chart, to the leaves on your plant. Which one looks like it matches??

 

[St. Tom]

i would wait for @Waira to chime in but @Proph is someone who knows his way around plants and i would trust his judgement and i agree maybe adding more supplements may not be the way to go

 

[the123321]

Thanks. The silicium flash is a biotabs item that they detail to use when you have a deficiency. I am following that guide. The only thing I am adding is the coconut water and recharge. I am not adding the coconut water due to the deficiency. I am planning to add the coconut water from things that I have read online about how it is helpful to plants and I am only doing it 1 time per week. The biotabs guide detailed to do bactrex 1 time every 2 weeks and I am doing the recharge on weeks that I do not do the bactrex on there. The coconut water and recharge are only little extra things I am doing as a boost on there. I have done a lot of reading online and most of the people that I have read that do biotabs or really most grows add in little extra things to boost it. These are a very little boost that I thought would help the plants on there. The images you posted have quite a few different images than the images I looked at on the top results online for deficiency guide like on the gwe website. If you are saying you think it looks like potassium the gwe website has images of potassium deficiency that look way different than the 1 in your image. The gwe website has potassium deficiency starting out as brown edges on the tips of the leaves. The magnesium image in your image does not look like the gwe image. I have not seen any images online that I know of that look like that for magnesium. I am not saying that you are wrong. I am going by the images in the guides online that have the most results. Is it potassium that you think it is that the plant has the deficiency in on there? If it is potassium the top dressing has potassium on there.

 

[Proph]

Thanks. The silicium flash is a biotabs item that they detail to use when you have a deficiency. I am following that guide. The only thing I am adding is the coconut water and recharge. I am not adding the coconut water due to the deficiency. I am planning to add the coconut water from things that I have read online about how it is helpful to plants and I am only doing it 1 time per week. The biotabs guide detailed to do bactrex 1 time every 2 weeks and I am doing the recharge on weeks that I do not do the bactrex on there. The coconut water and recharge are only little extra things I am doing as a boost on there. I have done a lot of reading online and most of the people that I have read that do biotabs or really most grows add in little extra things to boost it. These are a very little boost that I thought would help the plants on there. The images you posted have quite a few different images than the images I looked at on the top results online for deficiency guide like on the gwe website. If you are saying you think it looks like potassium the gwe website has images of potassium deficiency that look way different than the 1 in your image. The gwe website has potassium deficiency starting out as brown edges on the tips of the leaves. The magnesium image in your image does not look like the gwe image. I have not seen any images online that I know of that look like that for magnesium. I am not saying that you are wrong. I am going by the images in the guides online that have the most results. Is it potassium that you think it is that the plant has the deficiency in on there? If it is potassium the top dressing has potassium on there.

I am only going off of what your posts says. We all want to help you, but if you don't believe what you are being told I can't help that. You said you are following the chart.. The chart says to use WATER ONLY until harvest.. You've done foliar feeds with Epsom salt 3 times you said.. You said you add recharge once a week.. You said you add vitamin c powder... You said you added coconut water... That is not following the chart.. Recharge is just like bactrex.. I've explained how both work previously. So you are doing double feeds of microbe life.. In coco, where there is no organic matter to be broken down.. The instructions say to use water only for a reason. Because adding extra stuff can cause lock outs or unwanted reactions. Deficiency does NOT mean add more.. The sooner you realized and understand that, the easier this will become. If you have a magnesium or potassium deficiency, that does not automatically mean add more potassium or magnesium. You thought you had a magnesium deficiency, so you did a foliar with Epsom salt to add more magnesium. If it's a lock out caused by too much magnesium, then you are just making things worse by adding more..

Just step back a little and think about it for a second... You know your plants are not truly deficient because you've put 2 bio tabs in the soil.. There must be something stopping them from being able to use that food, because you know it's in there.. When new growers plants have issues, it's usually going to be 1 of 3 things... Ph issues, over feeding causing lock outs, or under feeding that causes deficiencies. The ph you posted is fine.. You are using 2 bio tabs plus there recommended additives in each pot. That is supposed to get you to harvest.. So you know the plant isn't "under fed".. Only one thing left... Over feeding.. Which is what happens when you add extra stuff to a water only type of grow. I will tell you this much... Adding a top dress is not the answer.. The answer is figuring out what is causing the nutrient lock out... My guess is the excess recharge and bactrex..

You can follow the info from whichever site you prefer. As long as you know that a deficiency doesn't automatically mean "add more"..