What is happening to my plants?

[m8ty]

" My feed has 6 ml of Micro, 9ml of bloom and 1 ml of calmag per gallon"

This points to not being a deficiency, there's 800+ ppm of nutrients in the runoff, the question is why is the Mag issue showing up?

Does the water drip out of the cloth when you water? I noticed the Air Pots..

 

[Fourpey]

This points to not being a deficiency, there's 800+ ppm of nutrients in the runoff, the question is why is the Mag issue showing up?

Does the water drip out of the cloth when you water? I noticed the Air Pots..

yeah I give them roughly 1/4 gallon, they are in 3 gallon pots. By the time I finish pouring it starts running out the bottom, I get a good amount of runoff.

 

[Grower1974]

yeah I give them roughly 1/4 gallon, they are in 3 gallon pots. By the time I finish pouring it starts running out the bottom, I get a good amount of runoff.

A 3 gallon pot should absorb a little more than that when truly ready for a slow watering. Also, 1ML of Calmag usually isn’t enough. My plants get around 6-8ML/week. 2-3ML per gallon every other day or so.

 

[Fourpey]

A 3 gallon pot should absorb a little more than that when truly ready for a slow watering. Also, 1ML of Calmag usually isn’t enough. My plants get around 6-8ML/week. 2-3ML per gallon every other day or so.

I added calmag at a strength of 5 ml/gallon and will see if that helps. Watering that 1/4 gallon I get like 40%-50% back as runoff. I am waiting for less runoff to start watering more, does that make any sense?

 

[Grower1974]

I added calmag at a strength of 5 ml/gallon and will see if that helps. Watering that 1/4 gallon I get like 40%-50% back as runoff. I am waiting for less runoff to start watering more, does that make any sense?

50% run off of 1 quart, is only 16oz of water or 2 cups. You need to water more slowly. Around 4oz every 3-4 minutes so the medium can absorb it more thoroughly.

 

[Fourpey]

50% run off of 1 quart, is only 16oz of water or 2 cups. You need to water more slowly. Around 4oz every 3-4 minutes so the medium can absorb it more thoroughly.

Unfortunately I'm kindof on a tight schedule most of days and I don't always have the time to hand water that slowly. I have a slow watering can though I don't just dump it in, I do circles around the plant.

 

[Thatoneguyyouknow_]

It’s very difficult to actually “burn” plants with LED’s. Cannabis plants can’t get too much light. They only process what they can use. This is why they grow so much more happy/agressive outside in direct sunlight at 2000-2400ppfd.

I’ve bleached the very top of a few colas, but they were literally touching the LED bar at 108°F. 2” below that, the buds and leaves were still perfect. That distance, they were seeing betwen 1200-1400ppfd.

I veg all my plants at at least 550-650ppfd at 400W and 14-18” above the canopies.

Environment and nutrient processing is much more important.

This. Ive had some cola tips like 3 inches off nearly 500 watt panels, but they grew that close on their own. Not without it's issues of course. Light burn or bleaching wasn't one of them.

When i was running HPS lights, as long a si could keep temps managed, ive had plant grow on their own to within a foot of the light or closer. And i have even had bud tips bleach snow white. But everything under it was still fine. Just fine. If not absolutely fantastic lol.

OP, seems like ya may have a bit of a PH problem in the other direction. A nice flush followed by a feed will prob get you back on track. That thing i said about burpee bricks having inconsistent PH, keep an eye on that probably.

By those burpee bricks having inconsistent PH, i dont just mean when it comes fresh from the cellophane(although this too), or brick to brick (although this too), i mean while using it, the PH can do strange things sometimes. At least as of several years ago. Flushing/buffering the coco bricks before using became a religious thing for me. Never had that issue with bagged coco, but it was a lot more expensive too.

Unfortunately I'm kindof on a tight schedule most of days and I don't always have the time to hand water that slowly. I have a slow watering can though I don't just dump it in, I do circles around the plant.

I just fill a 32 ounce aquafina bottle. I twisted a wood screw through the lid to make a hole.

I squeeze the bottle while constantly moving with a single stream. im a cheapskate though. Takes longer. Works very well though. But, come ooooooooon, whats an extra 5 mins with the ladies gonna hurt? An extra 5 mins here, extra 5 there, can make a world of difference to the end result with this plant.

 

[Fourpey]

UPDATE: After all, I'm pretty sure now this is a magnesium deficiency. My pH/ppm numbers are all ok, but my plants lower leaves that are the most affected seem to have worsened. Yesterday I added more calmag to the feed at 5ml/gal. They have been getting 6micro/9bloom/5calmag for 2 feeds now. Will the most afected leaves turn back the way they were or will it just stop spreading? And in how much time can a plant bounce back from a magnesium deficiency?

Goin in pH 5.8, ppm 600
Runoff coming out at pH 6.1-6.2, ppm 700-750

The one thing I don't understand is my soil pH, its been stuck at 7 since the very beginning and won't budge. Should I worry about that or is monitoring runoff enough? I'm starting to think my soil meter is'nt working properly.

 

[m8ty]

UPDATE: After all, I'm pretty sure now this is a magnesium deficiency. My pH/ppm numbers are all ok, but my plants lower leaves that are the most affected seem to have worsened. Yesterday I added more calmag to the feed at 5ml/gal. They have been getting 6micro/9bloom/5calmag for 2 feeds now. Will the most afected leaves turn back the way they were or will it just stop spreading? And in how much time can a plant bounce back from a magnesium deficiency?

Goin in pH 5.8, ppm 600
Runoff coming out at pH 6.1-6.2, ppm 700-750

The one thing I don't understand is my soil pH, its been stuck at 7 since the very beginning and won't budge. Should I worry about that or is monitoring runoff enough? I'm starting to think my soil meter is'nt working properly.

The damage leaves won't go back to normal but the new growth will get better as the weeks progress.

Have a read at prepping coco in the forum threads, some coco bags need to be rinsed and buffered with nutrients to prevent all the issues.

 

[Fourpey]

The damage leaves won't go back to normal but the new growth will get better as the weeks progress.

Have a read at prepping coco in the forum threads, some coco bags need to be rinsed and buffered with nutrients to prevent all the issues.

Should I flush at least once or multiple times? with distilled water pH'd to 6.0 with 5ml calmag/gallon? Would that help?

If I flush can I resume feeding a few hours later or right after?

One of my plants is really not having it now. Two of the affected fan leaves have flipped upside down and I just read that is a symptom of mg deficiency :(

 

[m8ty]

Should I flush at least once or multiple times? with distilled water pH'd to 6.0 with 5ml calmag/gallon? Would that help?

If I flush can I resume feeding a few hours later or right after?

One of my plants is really not having it now. Two of the affected fan leaves have flipped upside down and I just read that is a symptom of mg deficiency :(

Do you have a water vending machine at the local grocery store? If you do get a few gallons of water and flush that coco real good with plain R.O. water until the run off comes out the same as to what your pouring in.

 

[Fourpey]

Do you have a water vending machine at the local grocery store? If you do get a few gallons of water and flush that coco real good with plain R.O. water until the run off comes out the same as to what your pouring in.

Ok so no nutes in it. And once that is done I feed as usual? Do I need to wait or as soon as its done dripping out I feed?

 

[Beachbumm]

Should I flush at least once or multiple times? with distilled water pH'd to 6.0 with 5ml calmag/gallon? Would that help?

If I flush can I resume feeding a few hours later or right after?

One of my plants is really not having it now. Two of the affected fan leaves have flipped upside down and I just read that is a symptom of mg deficiency :(

What's the reason you're not using tap water?

 

[Fourpey]

What's the reason you're not using tap water?

I use tap to feed my plants. But for the flush everybody seems to say RO or distilled

 

[Beachbumm]

I use tap to feed my plants. But for the flush everybody seems to say RO or distilled

That's a new one on me? Did anyone mention why cuz I'm always trying to learn

What's the PPM of your tap water?

 

[Fourpey]

That's a new one on me? Did anyone mention why cuz I'm always trying to learn

What's the PPM of your tap water?

My ppm is 162. My guess is simply that RO water is cleaner and overall better for plants.

 

[Beachbumm]

My ppm is 162. My guess is simply that RO water is cleaner and overall better for plants.

Cleaner but not necessarily better. I was just curious, I'd never heard that, best wishes!

 

[Oldchucky]

UPDATE: After all, I'm pretty sure now this is a magnesium deficiency. My pH/ppm numbers are all ok, but my plants lower leaves that are the most affected seem to have worsened. Yesterday I added more calmag to the feed at 5ml/gal. They have been getting 6micro/9bloom/5calmag for 2 feeds now. Will the most afected leaves turn back the way they were or will it just stop spreading? And in how much time can a plant bounce back from a magnesium deficiency?

Goin in pH 5.8, ppm 600
Runoff coming out at pH 6.1-6.2, ppm 700-750

The one thing I don't understand is my soil pH, its been stuck at 7 since the very beginning and won't budge. Should I worry about that or is monitoring runoff enough? I'm starting to think my soil meter is'nt working properly.

Just from a quick look, I don’t think that looks like a very reliable meter! Just two. Cents.

 

[climbit]

My guess is that it's too much light, based on the yellowing between the veins.

I’m unable to see this.

 

[ArtfulCodger]

I’m unable to see this.