Bottom leaves turning Yellow

[AmbitiousRJ]

I fed both plants yesterday the same nutrients and one of my plants bottom leaves started turning yellow on the edges and clawing .. I fed them Foxfarms BigBloom 4 Tablespoons 1/4 teaspoon floralicious plus and 1/2 ml rapidStart. I feed them both the same time every 3-4 days and every other water I give them nutes or just Rain water. One plant looks healthy but the other ones started clawing and turning yellow / brown any ideas what’s causing this ? And what should I do ? The first image is the healthier one the second is the one with damaged leaves

 

[twalte]

Are you giving them any CalMag? If you’re using rainwater, you’re probably not giving them enough mag. Being on your older leaves, that’s my best guess.

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[AmbitiousRJ]

Are you giving them any CalMag? If you’re using rainwater, you’re probably not giving them enough mag. Being on your older leaves, that’s my best guess.

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No I haven’t but I’ll use that on my next one and see how it responds thanks for your advice!

 

[OldMedUser]

The only thing I see going on with the bottom leaves is one with what looks like a bit of nute burn or water damage from nutes maybe being splashed on it the last time it was fed? Very dark leaves indicates lots of nutes and the yellowing in the upper leaves will likely go away with more light exposure due to rapid growth of the plant.

A little CalMag won't hurt but don't go nuts. Too much is worse than not enough.

 

[ColoradoHighGrower]

^^ this. Too much nutrients, possibly watering too frequently. Let them get thirsty and then give them a really good soak with just ph'd clean/aged water, lots of run off. Only h2o for 9ne or two waterings would be okay. Make sure you let the pot get pretty dry between waterings from now on, like a few days... let the plant tell you when it's thirsty!

 

[polishpollack]

The OP writes tablespoons instead of teaspoon. Is this the correct dose amount you're suppose to use? It sounds like way too much, especially for such a small plant. Also, aren't the bloom ferts suppose to be used in flowering, not vegging? I'm wondering if it's too much of the wrong nutrient.

 

[OGBudz]

The OP writes tablespoons instead of teaspoon. Is this the correct dose amount you're suppose to use? It sounds like way too much, especially for such a small plant. Also, aren't the bloom ferts suppose to be used in flowering, not vegging? I'm wondering if it's too much of the wrong nutrient.

^^Good eye i didn't even catch that he wrote tablespoons, yep it's definitely supposed to be teaspoons.

 

[Seed of Memory]

The OP writes tablespoons instead of teaspoon. Is this the correct dose amount you're suppose to use? It sounds like way too much, especially for such a small plant. Also, aren't the bloom ferts suppose to be used in flowering, not vegging? I'm wondering if it's too much of the wrong nutrient.

Fox Farm Big Bloom actually says tablespoons in the instructions. So if you are to use it at full strength you would use tablespoons. I use it and I used 2 TBS for my last water. That and some Cal-mag put me at 740 ppm before water. Big bloom is basically an organic supplement. Its NPK doesn't even hit 1. Off the top of my head it is 0.7-0-0.5 or something like that. Even at 4 tablespoons I would think it would be hard to overdo. But you never know.

 

[OGBudz]

You better check again mine says teaspoons throughout the whole grow.

 

[Seed of Memory]

You better check again mine says teaspoons throughout the whole grow. View attachment 4451621

I'm talking bottle instructions. I think the chart is if you are using it in conjunction with the rest of the nute line.

 

[Seed of Memory]

You better check again mine says teaspoons throughout the whole grow. View attachment 4451621

And 6 teaspoons is 2 tablespoons.

 

[AmbitiousRJ]

You better check again mine says teaspoons throughout the whole grow. View attachment 4451621

 

[AmbitiousRJ]

My bottle says Tablespoons

 

[Seed of Memory]

Mind you, I'm no expert. But those leaves are at the bottom of the plant and sometimes they just die. The correct measurement is either tspn or tbs. It doesn't matter as long as it is the same in the end. You do need to add a cal-mag supplement though. Do you have a ppm meter? What kind of lights are you running?

 

[Kassiopeija]

And what should I do ?

Except for CalMag, put the nutes back to the shelf.
Your new/fresh growth looks healthy green while the old leaves are too dark/ burned (potential Potassium abundancy)
Soil buffers as long as there are still nutes in it. At some point in the future simply transplant.
If you got good soil, itll basically do the feeding for you.

 

[polishpollack]

I didn't see any nitrogen in that bottled version. Just potassium and phosphorus. No N in that NPK. hmm

 

[OGBudz]

I'm talking bottle instructions. I think the chart is if you are using it in conjunction with the rest of the nute line.

I was wondering where you were getting 4 tablespoons from. Never noticed that on the bottle i just always looked at the feeding chart i have.

 

[Seed of Memory]

I was wondering where you were getting 4 tablespoons from. Never noticed that on the bottle i just always looked at the feeding chart i have.

Honestly, i had never paid attention to the differences between bottle and chart. I monitor my ppm so i don't typically follow the chart. But I cut my nutes in half from bottle instructions to 50% so 2 tbs per gallon.