First grow please help

Hopefully someone can help me out. This is day 33 in soil. Using fox farm at 1/4 dose. I saw this yesterday and just left for a 4 day trip. I think it’s a calcium deficiency and hope the cal mag I added will make these girls perk back up. Can anyone confirm that’s what calcium deficiency will look like.
 

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UndyToke

Member
Is that the real color of your plant or is it under a blurple light?
To me it looks like your plant is both hungry for nutes and light, as well as too high in nitrogen. There might be a nutrient lockout in your mix, you need to be careful with cal-mag as it often comes with Nitrogen.

What pH do you have your water at when watering?
How wet is the soil? It looks like you are feeding the plants very little, yet we can see a problem with nutrient uptake. So there is either an excess of minerals in the soil, bad pH, poor microbial life, pest or too much water.
I would bet it is a combination of too much water, too little light and out of range pH with Nitrogen excess.

1) I would bring the light slightly closer to the plant
2) Give a good watering without nutrients at about 6.2 pH to affected plants (if you have it ; add Calcium in a non-nitrogen form to the water, such as Calcium chloride (de-icing salt), if you don't have some it does not matter, but make sure the pH is right)
3) Make sure you have a water runoff, you are looking to clean to medium of excess salts with this watering.
4) You then wait 2-4 days for the first inch of top soil to be dry.
5) From there, feed them at at least 1/2 strength of your nutrients recommended dose (your plants look thin and tiny for 33 days in, they need more light)

The pic of your full plant doesn't look that bad, but that's how I would do if I was using your method to grow and I had the problems you showed in the first two pics (if it doesn't fix itself and happens on more than just a few leaves.)
 
Is that the real color of your plant or is it under a blurple light?
To me it looks like your plant is both hungry for nutes and light, as well as too high in nitrogen. There might be a nutrient lockout in your mix, you need to be careful with cal-mag as it often comes with Nitrogen.

What pH do you have your water at when watering?
How wet is the soil? It looks like you are feeding the plants very little, yet we can see a problem with nutrient uptake. So there is either an excess of minerals in the soil, bad pH, poor microbial life, pest or too much water.
I would bet it is a combination of too much water, too little light and out of range pH with Nitrogen excess.

1) I would bring the light slightly closer to the plant
2) Give a good watering without nutrients at about 6.2 pH to affected plants (if you have it ; add Calcium in a non-nitrogen form to the water, such as Calcium chloride (de-icing salt), if you don't have some it does not matter, but make sure the pH is right)
3) Make sure you have a water runoff, you are looking to clean to medium of excess salts with this watering.
4) You then wait 2-4 days for the first inch of top soil to be dry.
5) From there, feed them at at least 1/2 strength of your nutrients recommended dose (your plants look thin and tiny for 33 days in, they need more light)

The pic of your full plant doesn't look that bad, but that's how I would do if I was using your method to grow and I had the problems you showed in the first two pics (if it doesn't fix itself and happens on more than just a few leaves.)
Thanks man I appreciate the advice I’ll see how it works. I’m hoping they pull through until I get back Monday night
 

PopAndSonGrows

Well-Known Member
Oh and I will add, your original diagnosis of this being a calcium issue is probably correct, and IMO it means you're paying attention and doing your own research to an extent. Keep up the great work!!
 
Is that the real color of your plant or is it under a blurple light?
To me it looks like your plant is both hungry for nutes and light, as well as too high in nitrogen. There might be a nutrient lockout in your mix, you need to be careful with cal-mag as it often comes with Nitrogen.

What pH do you have your water at when watering?
How wet is the soil? It looks like you are feeding the plants very little, yet we can see a problem with nutrient uptake. So there is either an excess of minerals in the soil, bad pH, poor microbial life, pest or too much water.
I would bet it is a combination of too much water, too little light and out of range pH with Nitrogen excess.

1) I would bring the light slightly closer to the plant
2) Give a good watering without nutrients at about 6.2 pH to affected plants (if you have it ; add Calcium in a non-nitrogen form to the water, such as Calcium chloride (de-icing salt), if you don't have some it does not matter, but make sure the pH is right)
3) Make sure you have a water runoff, you are looking to clean to medium of excess salts with this watering.
4) You then wait 2-4 days for the first inch of top soil to be dry.
5) From there, feed them at at least 1/2 strength of your nutrients recommended dose (your plants look thin and tiny for 33 days in, they need more light)

The pic of your full plant doesn't look that bad, but that's how I would do if I was using your method to grow and I had the problems you showed in the first two pics (if it doesn't fix itself and happens on more than just a few leaves.)
When do you cut the nutrients off on your grows?
 

UndyToke

Member
When do you cut the nutrients off on your grows?
When I first ran DWC I used to cut nutes 1 week prior to harvest... but I think I could have gotten away with flushing 2 weeks prior to harvest, either way I didn't feel it made much of a difference.

But by the end I decided to switch my feeding to organics once my root mass was enough for bacteria to live on, so basically 3.5 to 4 weeks before harvest I'd say... I got awesome terpene production and really high quality bud doing this, but it does fuck up your system's pH in the first 3-4 days, so you constantly have to bring it down to 5.8 to 7.2. Roots can get slimy for the first 2-3 days, but they get back to a more healthy state once the good bacteria is settled in the roots. They also branch out way more, they aren't just "spaghetti like" like normal hydro roots.

Liquid seaweed, fish hydrolysate, fish emulsion, fulvic acid are all readily available for your plant to uptake, the only problem in hydroponics is that bacteria doesn't have enough surface area to live on, so you really have to wait for root mass to be big enough. It's not something I recommend on a first grow or on all your plants if you have never done this, but I got awesome results.

Now I'm just doing organics in coco since I did notice the plants I used organics stuff on were retaining their moisture better and smelled better. So yeah I don't do minerals only now, I rock like... 85% organics and 15% minerals and try to feed the life within my growing medium instead of just the plants directly. I don't flush using organics.
 
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