This can’t be right!

This will be lengthy but I’ll give as much information as possible to help with a diagnosis.

There is a sticky thread to take pics with the lights off, but unfortunately for me I took these pics before I read that and I’m now at work, plus the 2 week old picture has already been taken back then so I apologize for that.

At first I thought I was just getting fall colors, but as these leaves turned this deep purple I realized something is amiss.

I have taken 2 pictures of the same plant. The first pic is about 2 weeks ago, and the second one is today.

this particular plant is being grown synthetically in coir that I buffered myself, using jacks part B and de chlorinated tap water for feedings. HOWEVER, in this same tent I just harvested one growing in organic soil using Dr Earth dry amendments in an 30 gallon pot and I had very similar discoloration of the leaves towards the end, however not quite as severe.

my setup: this tent is a 4x8. I have 3 Bestva BP4000 LED lights running at about 80 percent with a par value around 800 on my canopy. I also have a single 1000 watt HPS light on one end. I know my light setup is a bit bizarre, we’re actually using the HPS on a hooded vent duct system to try and help heat this room.

my humidity has been my biggest headache. Despite running my humidifiers around the clock, it has been particularly cold here and our gas fired furnace is drying the piss out of our air. I struggle keeping things above 50 percent. We are at 62 percent for the most part though.

My temps have been around 79 degrees but admittedly they have dropped as low as 62 when a couple strong cold spells passed through.

I have tried to keep my PH around 5.9, but I realize I had issues with a supposed high end but junk ph pen I thought I had recalibrated to fix. So I switched to GH drops and gotten it close to 6.2 as I can whilst I await my new pen which arrives tomorrow. So a bad PH is a very real possibility here.

I have not used any magnesium supplements. Because I have just always felt my water has a high magnesium content from past grows but I could be mistaken. No water testing has been done.



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Mr. Mohaskey

Well-Known Member
So only Jack's B for nutes? You need part A and the Epsom Salts the entire grow. You can modify each part to suit what the plants need, but don't think you should be excluding any part entirely. Just my .02
 
well yes I did consider that, but keep in mind I just had another plant in soil do the very similar thing. That was grown entirely organic. I harvested it last week a little early because I feared the purple leaf syndrome would only get worse on it too.

The last time I added epsom salts to a hydroponics grow they almost died right afterwards and I only added like a teaspoon or two to the 5 gallon reservoir.

wether that had anything to do with it or not idk, but someone on here told me I probably have high magnesium in my water so now I’m a little gun shy. I know I’m throwing random shit around. I guess the proper way is to just get everything tested and know what the @@@@ I’m actually adding or excluding
 
I couldn’t find how to edit my last reply, I used jacks plug formula through the entire veg stage, I’ve done this in the past with quite a few other grows and had excellent results. I decided to give the jacks a try as before I used dynabloom when I flipped to flower and was looking to try something different
 
It doesn’t really bother me in that sense, it just seems abnormal. I grew in this same room last winter and didn’t see this issue so I assumed something is wrong
 

cannabiscrusader

Well-Known Member
Just low night temps. It can prolong maturation, but it's negligible. Got so cold here last week that the two plants by the intake fan are coloring up. Looks pretty
 

SofaKingHigh_

Well-Known Member
This will be lengthy but I’ll give as much information as possible to help with a diagnosis.

There is a sticky thread to take pics with the lights off, but unfortunately for me I took these pics before I read that and I’m now at work, plus the 2 week old picture has already been taken back then so I apologize for that.

At first I thought I was just getting fall colors, but as these leaves turned this deep purple I realized something is amiss.

I have taken 2 pictures of the same plant. The first pic is about 2 weeks ago, and the second one is today.

this particular plant is being grown synthetically in coir that I buffered myself, using jacks part B and de chlorinated tap water for feedings. HOWEVER, in this same tent I just harvested one growing in organic soil using Dr Earth dry amendments in an 30 gallon pot and I had very similar discoloration of the leaves towards the end, however not quite as severe.

my setup: this tent is a 4x8. I have 3 Bestva BP4000 LED lights running at about 80 percent with a par value around 800 on my canopy. I also have a single 1000 watt HPS light on one end. I know my light setup is a bit bizarre, we’re actually using the HPS on a hooded vent duct system to try and help heat this room.

my humidity has been my biggest headache. Despite running my humidifiers around the clock, it has been particularly cold here and our gas fired furnace is drying the piss out of our air. I struggle keeping things above 50 percent. We are at 62 percent for the most part though.

My temps have been around 79 degrees but admittedly they have dropped as low as 62 when a couple strong cold spells passed through.

I have tried to keep my PH around 5.9, but I realize I had issues with a supposed high end but junk ph pen I thought I had recalibrated to fix. So I switched to GH drops and gotten it close to 6.2 as I can whilst I await my new pen which arrives tomorrow. So a bad PH is a very real possibility here.

I have not used any magnesium supplements. Because I have just always felt my water has a high magnesium content from past grows but I could be mistaken. No water testing has been done.



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Temperature is one of the biggest factors in color change. Perfectly normal and nothing to worry about
 

farmerfischer

Well-Known Member
Quit ph'ing your water/food with soil... if it's true potting soil it will buffer the ph for you... the soil already will compensate for ph swings with out help..
 
The color change with the lower temps makes perfect sense, thanks for that. I didnt think the color change would be this dramatic, but now I have 2 people agreeing thats what it is, I concur!
 
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