Help Identify Issue

Hello, I'm in the beginning of 2nd week of flower. In this past week the leafs have started to show signs of deficiencies. I started giving nutes about 2 weeks ago because I'm using Ocean Forest soil, so I've been letting the plants soak up all the nutes from that. I'm using the FF trio. I've also been giving about 2ml of cal-mag to each gallon of water.

The color of the leafs turning a light green and getting some brown splotches sporadically, and some leafs are turning a slight yellow orange color. Please see pics.

Your feed ec is likely to strong. Reduce feed strength. All your new growth has bleached burnt tips already.

They were eating a dwindling supply that's was never totally consumed. Then you added a full strength feed on top of that I would assume. In my experience about ¾ what the packaging says is what most plants like. Maybe drop your feed to half strength for a week than go ¾.

ProPheT 216 said:

Your feed ec is likely to strong. Reduce feed strength. All your new growth has bleached burnt tips already.

They were eating a dwindling supply that's was never totally consumed. Then you added a full strength feed on top of that I would assume. In my experience about ¾ what the packaging says is what most plants like. Maybe drop your feed to half strength for a week than go ¾.

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Negative, I've only given them 2 waterings with nutrients in the past 2 weeks. I use ff trio and only added ½ the strength they recommended and 2ml of cal mag per gallon of water, so I don't see how they could be over fed.

Then they r probably starving. Do a slurry test before anything else. Check your ec and ph of the medium.

You either started adding nutrients to soon and they r locking out because of high ec or they want more

I wonder if you're overloading the calcium. Calcium in varying concentrations can be antagonistic to pretty much everything else. If you're using anything other than distilled or R.O. (mountain towns are a big exception) it already has calcium in it. You can get a water quality report from the city's website or you can request their present relief directly from your utility company. Mine in Oklahoma has 200ppm of calcium alone so I don't add anything.

Johiem said:

I wonder if you're overloading the calcium. Calcium in varying concentrations can be antagonistic to pretty much everything else. If you're using anything other than distilled or R.O. (mountain towns are a big exception) it already has calcium in it. You can get a water quality report from the city's website or you can request their present relief directly from your utility company. Mine in Oklahoma has 200ppm of calcium alone so I don't add anything.

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Dealing with this in late flower, at least I think.

I use cal hypo to sterilize my res, and my plants are within a couple weeks of finish. Working alot of OT, so I decided to let last weeks res (flood and drain) ride another week, with top offs as needed. Shes not eating much, but I believe the added calcium to the already depleted res is causing slight lockout. They're almost done, so I'm not too concerned, but I think you're on the money.

Tolerance Break said:

I think you're on the money.

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I appreciate it.

I got to thinking about it and and realized further that the Trio has Calcium as well, I'd lean toward cutting the CalMag completely.

What “ trio “ are you are using ?

Hopefully not the open sesame , beastie, cha ching.

Also that ocean forest medium would have fed that plant for weeks by itself . On tap water.

Your dark purple stalks and stems are a concern- usually a stress response , and occasionally a mag issue or environmental.

Your over use of calmag probably plays into it as well - since your water has it ( city ) and well as your nutes … and at your every watering by your hand.

Budzbuddha said:

What “ trio “ are you are using ?

Hopefully not the open sesame , beastie, cha ching.

Also that ocean forest medium would have fed that plant for weeks by itself . On tap water.

Your dark purple stalks and stems are a concern- usually a stress response , and occasionally a mag issue or environmental.

Your over use of calmag probably plays into it as well - since your water has it ( city ) and well as your nutes … and at your every watering by your hand.

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I'm using the big bloom, grow big and tiger bloom trio. I'm on day 26 since transplant from clone and only fed them this past week nutes & cal mag 2x because of deficiency signs (brown spots started appearing.) Other than that, they received tap water left out for 24 hours or longer. My first grow had the same purple stocks. Don't know what I could be doing both grows to cause that.

Johiem said:

I wonder if you're overloading the calcium. Calcium in varying concentrations can be antagonistic to pretty much everything else. If you're using anything other than distilled or R.O. (mountain towns are a big exception) it already has calcium in it. You can get a water quality report from the city's website or you can request their present relief directly from your utility company. Mine in Oklahoma has 200ppm of calcium alone so I don't add anything.

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The ppm of my tap water is about 23, so I don't believe its high in minerals. My previous response above gives detail to my watering/feeding habits.

FreshOffTheCut said:

I'm using the big bloom, grow big and tiger bloom trio. I'm on day 26 since transplant from clone and only fed them this past week nutes & cal mag 2x because of deficiency signs (brown spots started appearing.) Other than that, they received tap water left out for 24 hours or longer. My first grow had the same purple stocks. Don't know what I could be doing both grows to cause that.

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What's your water like? pH and ppm, well or city water? And are you adding anything to it?

Tolerance Break said:

Dealing with this in late flower, at least I think.

I use cal hypo to sterilize my res, and my plants are within a couple weeks of finish. Working alot of OT, so I decided to let last weeks res (flood and drain) ride another week, with top offs as needed. Shes not eating much, but I believe the added calcium to the already depleted res is causing slight lockout. They're almost done, so I'm not too concerned, but I think you're on the money.

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It's unlikely your issue is due to the Ca contribution of the pool shock.
The calcium ppm from the cal hypo is insignificant as a source of Ca. Ca ppm is 50% of the Cl pmm, so a couple of ppm Ca.

Billy the Mountain said:

It's unlikely your issue is due to the Ca contribution of the pool shock.
The calcium ppm from the cal hypo is insignificant as a source of Ca. Ca ppm is 50% of the Cl pmm, so a couple of ppm Ca.

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My issue isn't that bad. I'm running nutes at half strength, they're probably closer too 3/8ths or lower after the last top off, and I add alot of pool shock due too the rate of evaporation and once a day fertigations.

This is a terrible example, but I have a vanity issue with my current crop.

Mericat said:

What's your water like? pH and ppm, well or city water? And are you adding anything to it?

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Tbh my ph meter isn't working right, but my ppm tap water is about 23 and I've given 2 nute feedings around 340 each. I've read a lot about how you should give your plant half the recommended dose of nutes.

FreshOffTheCut said:

Tbh my ph meter isn't working right, but my ppm tap water is about 23 and I've given 2 nute feedings around 340 each. I've read a lot about how you should give your plant half the recommended dose of nutes.

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Your water sounds like RO water. Do you have a water filtration system?

Mericat said:

Your water sounds like RO water. Do you have a water filtration system?

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Negative, straight from the tap.