What is my problem

First time medical grow needs help, 5x8 2 600 hps, Humboldt Organic line, (1/3 OF, 1/3 light warrior, 1/3 perlite. Well water, 6.5, Feed according to Humboldt's schedule every 2 days. Master Kush and Blueberry. Here are the photos. Day temps 75 to 85 night 60 to 68. RH 50%


Blueberry

Are you watering in between feedings?My humbolt nute charts on my jugs are for hydro.i always water in between.I also only use 1/2 to 3/4 the usual dosage the nutes buildup in the mix.

Chalwa, it looks to me like you are showing classic symptoms of a Magnesium (Mg) deficiency, with the edges of the leaves turning yellow first. The other images, showing the curling leaves, look to me like you are not watering enough, is that even the same plant? Could also be nitrogen toxicity, with the leaves turning a dark green and curling downward and in.

To fix the Mg deficiency:
fast absorption - epsom salts (MgSO4) and Ca- Mg
moderate absorption: dolomite lime, garden lime, worm castings

Do your leaves feel light and frail, like they lack body? Thats a sign of underwatering. If they are dark green and have some body, feel heavier, then you may havea nitrogen toxicity, in which case you should lighten up the fertilizer, and perhaps flush your plants.

Hope this helps.

Looks to me like you have nutrient lock, with 90+% certainty. Those dark curled leaves indicate overfert, and the rest of the plant is showing deficiencies.(potassium, magnesium, and probably others) Time to flush.

Try the two links. hope it helps

https://www.rollitup.org/marijuana-plant-problems/216537-self-diagnose-your-plants.html
http://www.marijuana-seeds.net/Thanks-ThankYou.htm

the blue berry looks like over fertilization that strains does that all the time they hate high doses the other has a deficiency for sure and if your watering both of them with the same solution i agree you prob have a lock out. flush flush flush and then water with a lighter dose and for future reference most fertilizer regimens are total bs meant to get you to buy 10 different products and they almost always lead to toxic salt build ups and lock outs

jakeman311 said:

the blue berry looks like over fertilization that strains does that all the time they hate high doses the other has a deficiency for sure and if your watering both of them with the same solution i agree you prob have a lock out. flush flush flush and then water with a lighter dose and for future reference most fertilizer regimens are total bs meant to get you to buy 10 different products and they almost always lead to toxic salt build ups and lock outs

Click to expand...

Deja vu,water inbetween feedings.

kaarne said:

Chalwa, it looks to me like you are showing classic symptoms of a Magnesium (Mg) deficiency, with the edges of the leaves turning yellow first. The other images, showing the curling leaves, look to me like you are not watering enough, is that even the same plant? Could also be nitrogen toxicity, with the leaves turning a dark green and curling downward and in.

To fix the Mg deficiency:
fast absorption - epsom salts (MgSO4) and Ca- Mg
moderate absorption: dolomite lime, garden lime, worm castings

Do your leaves feel light and frail, like they lack body? Thats a sign of underwatering. If they are dark green and have some body, feel heavier, then you may havea nitrogen toxicity, in which case you should lighten up the fertilizer, and perhaps flush your plants.

Hope this helps.

Click to expand...

Thanks, I have been feeding with just water the last two feedings. Ordered Calplex and Huvega. Going to cut the Blueberry's nutes by 60 % and the kush's back as well.
As far as the epsom salts, How much do you add per gallon and is there an organic epsom salt?

I only use ES during veg.I find it leaves a salty taste after drying if you go more than 2 weeks of flower with it.I use 1/2 tsp per gallon.During veg.

Looks like you locked them up with nute burn. Easy fix flush,flush,flush and cut those nutes down to 1/4 to half of what it says once a week. And then water and mollass. the other feeding in the week tablespoon per gallon of water.

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Uncle Ben says to always assume the problem is ph and fix that first disregarding all other plant symptoms .... but I gotta go with everyone else and say that's overfertilization and you have to either feed every second watering or 1/2 your nutes each watering. Don't worry about Humbolt's feeding schedule - water when the pots dry to the point you want and always light on the nutes.

"Well water, 6.5"

Are you checking your PH after you add your nutes? Nutes will often drop the PH by a couple of points, if you're not checking after the nutes are added then I'd go with Kaarne, some type of nute deficiency or toxicity. What you are doing will solve that problem as well as the nute - flush with ph adjusted clear water.

If the leaves continue to go bad you may want to flush each pot with 1-2 times it's volume in clear water to flush all the nutes out of the root ball.

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ps Uncle Ben actually has a thread ripping folks a new one for always harping on PH first with problems, I've been waiting for a chance to throw that first paragraph out.

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Chalwa said:

Thanks, I have been feeding with just water the last two feedings. Ordered Calplex and Huvega. Going to cut the Blueberry's nutes by 60 % and the kush's back as well.
As far as the epsom salts, How much do you add per gallon and is there an organic epsom salt?

Click to expand...

Treat Mg deficiency by watering with 2 teaspoons of Epsom salts (magnesium sulfate) per gallon of water. For a fast cure perform a foliar spray with a 2% solution of Epsom salts. Continue a regular watering schedule with Epsom salts until the symptoms totally disappear. If your fertilizer contains available Mg, then you do not need to add Epsom salt regularly.

Quick overview of Mg deficiency: Lower leaves start to show symptoms first, the edges, tips, and in between veins of the leaves start to turn yellow, may develop rusty brown spots. The veins remain green. The deficiency then progresses to the middle leaves, and finally to the upper most leaves. Recovery begins with the upper leaves turning green first followed by middle and lower leaves, respectively.

I would start with the foliar spray and add Epsom salt every watering, unless the fertilizer you are using contains available Mg.

There is no organic Epsom salt. It is a chemical compound, a mineral found in nature. That is its only form, so in a sense it is organic.

Hope this helps, good luck!

PS - It may be that you do have a nutrient lock up problem due to improper pH levels, in which case you will show symptoms of nutrient deficiencies since the plant is unable to make use of the available nutrients. Check your soil pH and water/fert solution pH before watering, make sure it is in the range 6.3 - 6.9.