• Here is a link to the full explanation: https://rollitup.org/t/welcome-back-did-you-try-turning-it-off-and-on-again.1104810/

Having plant problem, suspect Mg def or possible PH problem.

Was this to long winded. TL;DR


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  • Poll closed .

ronin026

Active Member
Hello,
I have a medical grow here in Washington State, and I've having some issues with my plants over the last couple of weeks. I've made some adjustments but I fear I may have applied to much nutrients in the process.

To begin with this is outdoor, we are about 5 weeks in. There are THREE different strands. Started indoor in April and moved them outside about two weeks ago(it's been rather warm this spring comparatively). They were also transplanted about 2-3 weeks ago.

I am watering them every two days, and just started using nuts recently(was short on $ initially). I am using the fox farm trio and following their watering schedule for soil found at (http://foxfarmfertilizer.com/images/pdf/soilenglish2015.pdf). I did skip the seedling feeding week listed as week 1, since they were several weeks into veg when I started. Essentially I am giving them nuts with their watering every other watering. I am following full dosage per gallon so 6 tsp of big bloom per gallon of water, etc twice per week.. Currently have only gave them a nut feeding twice since I just got them about 10 days ago.

Using Kellogg Garden Organics Raised Flower Bed Potting Soil found
(http://www.homedepot.com/p/Kellogg-Garden-Organics-3-cu-ft-Raised-Bed-and-Potting-Mix-Premium-Outdoor-Container-Mix-649/204643152). Pots are in 1 gallon or 3 gallon containers right now. Some of the larger plants are just starting to show roots at the bottom of the 1 gallon so I'm considering transplanting them again, but I don't want to add any additional stress at this point and risk losing some of them.

As I mentioned this is week 5 since I've had the plants, however I did buy them as clones from a dispensary here locally. They were approx 2-5 inches tall when I purchased them. They did stay indoors until a couple days after spring, when they were placed outdoors. I did try to acclimatize them for several days prior to them being permanently placed outside. I did this by placing them outside for a couple hours a day each day during the peak sun hours, then moving them back under lights once it started cooling down. The lights were 24/7 lights during the couple weeks they were indoors. They are fluorescent tube T5's so they ran rather cool and never were closer then 3 inches from the top of the plants. Didn't notice any buring during this time either, however I did notice the very beginning stages of whatever is plaguing them now.

Sorry if this is long winded, I just wanted to be thorough. I suspect there is a Mg diffency however the Ph also tested at 8(although I only have a cheap solution/soil mixture with color matching to try and determine Ph). I am not sure what my next step should be as I have been giving them nuts this last week or so and the fresh growth seemed to look worse today. Some of the fresh growth appears to be turning into itself and shriveling away. Theres plenty of photos attached so feel free to look yourself as I may not be using the most ideal description to depict the problem. This is only my 2nd grow, and my first outdoor so I don't have a plethora of knowledge regarding grows as I'm sure some in this community do. Any help you can provide is much appreciated.

I do want to reiterate this is a legal medical marijuana grow that is in compliance with all local city, state and county ordinances and/or RCW's.

Lastly I took more photo's than the 10 I was allowed to attach. Please view them here;
http://s1199.photobucket.com/user/ronin026/slideshow/Shared

Thanks in advance!
 

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mike4c4

Well-Known Member
Hello,
I have a medical grow here in Washington State, and I've having some issues with my plants over the last couple of weeks. I've made some adjustments but I fear I may have applied to much nutrients in the process.

To begin with this is outdoor, we are about 5 weeks in. There are THREE different strands. Started indoor in April and moved them outside about two weeks ago(it's been rather warm this spring comparatively). They were also transplanted about 2-3 weeks ago.

I am watering them every two days, and just started using nuts recently(was short on $ initially). I am using the fox farm trio and following their watering schedule for soil found at (http://foxfarmfertilizer.com/images/pdf/soilenglish2015.pdf). I did skip the seedling feeding week listed as week 1, since they were several weeks into veg when I started. Essentially I am giving them nuts with their watering every other watering. I am following full dosage per gallon so 6 tsp of big bloom per gallon of water, etc twice per week.. Currently have only gave them a nut feeding twice since I just got them about 10 days ago.

Using Kellogg Garden Organics Raised Flower Bed Potting Soil found
(http://www.homedepot.com/p/Kellogg-Garden-Organics-3-cu-ft-Raised-Bed-and-Potting-Mix-Premium-Outdoor-Container-Mix-649/204643152). Pots are in 1 gallon or 3 gallon containers right now. Some of the larger plants are just starting to show roots at the bottom of the 1 gallon so I'm considering transplanting them again, but I don't want to add any additional stress at this point and risk losing some of them.

As I mentioned this is week 5 since I've had the plants, however I did buy them as clones from a dispensary here locally. They were approx 2-5 inches tall when I purchased them. They did stay indoors until a couple days after spring, when they were placed outdoors. I did try to acclimatize them for several days prior to them being permanently placed outside. I did this by placing them outside for a couple hours a day each day during the peak sun hours, then moving them back under lights once it started cooling down. The lights were 24/7 lights during the couple weeks they were indoors. They are fluorescent tube T5's so they ran rather cool and never were closer then 3 inches from the top of the plants. Didn't notice any buring during this time either, however I did notice the very beginning stages of whatever is plaguing them now.

Sorry if this is long winded, I just wanted to be thorough. I suspect there is a Mg diffency however the Ph also tested at 8(although I only have a cheap solution/soil mixture with color matching to try and determine Ph). I am not sure what my next step should be as I have been giving them nuts this last week or so and the fresh growth seemed to look worse today. Some of the fresh growth appears to be turning into itself and shriveling away. Theres plenty of photos attached so feel free to look yourself as I may not be using the most ideal description to depict the problem. This is only my 2nd grow, and my first outdoor so I don't have a plethora of knowledge regarding grows as I'm sure some in this community do. Any help you can provide is much appreciated.

I do want to reiterate this is a legal medical marijuana grow that is in compliance with all local city, state and county ordinances and/or RCW's.

Lastly I took more photo's than the 10 I was allowed to attach. Please view them here;
http://s1199.photobucket.com/user/ronin026/slideshow/Shared

Thanks in advance!
They look hungry. are you using any cal/mag?
 

ronin026

Active Member
I'm currently using Fox Farm Trio nutrients

grow big (6-4-4)
big bloom (2-8-4)
tiger bloom (0.01-0.3-0.7)
 

ronin026

Active Member
I also just did a PH test of my soil and it is reading at a solid 8 with a mixture style cheap tester.
 

ronin026

Active Member
Just completed a PH test on my nutrient and tap water mixture and found that the PH was a little high on that as well. All organic fox farm nuts with week 3 mixture (6tsp grow big, 2 tsp big bloom per gallon of water) and that tested at 7.0ph
 

ronin026

Active Member
And lastly I just did a PH test on the tap water and its over 8.0(high as my tester goes). Should I be using a PH down for this?
 

mike4c4

Well-Known Member
I also just did a PH test of my soil and it is reading at a solid 8 with a mixture style cheap tester.
You need to do a flush on the plants with just water then get the ph down close to 6.2 as you can you have lockout from the high ph in the soil.
 

mike4c4

Well-Known Member
Make sure you get good runoff every time you water from now on so it dont happen again and yes use PH down.
 

ronin026

Active Member
Ok great, that's kind of what I assumed as I concluded the tests this evening, but I didn't want to go pouring more chemicals in if I didn't need to. Appears I do.
 

mike4c4

Well-Known Member
And lastly I just did a PH test on the tap water and its over 8.0(high as my tester goes). Should I be using a PH down for this?
you need to take your tester to a pool place and have them make sure your tester is right. most tap water is 7
 

ronin026

Active Member
All i have currently for a tester is the rapitest soil test kit, which is a little vial and some powder you mix with your water/nuts. Sounds like I'll be making the investment for a good Ph meter tomorrow as well.
 

mike4c4

Well-Known Member
All i have currently for a tester is the rapitest soil test kit, which is a little vial and some powder you mix with your water/nuts. Sounds like I'll be making the investment for a good Ph meter tomorrow as well.
most ph testers need to be calibrated. Most pool and spa stores will calibrate it for you at no charge if you tell them its for a pool.
 

ronin026

Active Member
So yesterday I bought 20 gallons of distilled water, and watered the plants since the majority of stores in the area were already closed. Today I bought a bluelab ph pen from a local hydroponic store, as well as some pH down. Should I continue flushing my plants with a 6.2 ph water? or would it be harmful to flush them again today since I flushed them yesterday?
 

mike4c4

Well-Known Member
So yesterday I bought 20 gallons of distilled water, and watered the plants since the majority of stores in the area were already closed. Today I bought a bluelab ph pen from a local hydroponic store, as well as some pH down. Should I continue flushing my plants with a 6.2 ph water? or would it be harmful to flush them again today since I flushed them yesterday?
No just let them dry for a few days.
 
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