Deficiency

Fish scale

Fish scale

Well-Known Member
Does anyone have any ideas what this deficiency is? I'm guessing it's a Magnesium deficiency? But I'm not 100% sure.
Should I raise my EC slightly to try and get rid of the deficiency? or should I raise the PH from 6.0 to 6.5 so the plant can absorb magnesium easier?
I could always give her some calmag or Epsom salts to see if that fixes the issue?
I'm growing in coco and feeding daily until run off.
PH 6.0, EC is 1.2. I'm using A&B nutrients. The Temperature is between 27c and 29c, 80f to 84f.
Any help is appreciated. :weed:
 
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dwc420letsgo

dwc420letsgo

Well-Known Member
Ok last time. I can see yellowing veins from magenisum def, rust starting from calcium def likely, and your other post had what look like potassium deficiency. Coco needs to be buffered and it will strip calmag from the water, especially under led, hence why people add it to their feed. Hour water is 0.6 ec, so that means u are only giving the plant 0.6 ec of usuable nutrients. The plant is showing deficiency. If your ph really is at 6.0, then they are probably hungry.
 
Fish scale

Fish scale

Well-Known Member
dwc420letsgo said:
Ok last time. I can see yellowing veins from magenisum def, rust starting from calcium def likely, and your other post had what look like potassium deficiency. Coco needs to be buffered and it will strip calmag from the water, especially under led, hence why people add it to their feed. Hour water is 0.6 ec, so that means u are only giving the plant 0.6 ec of usuable nutrients. The plant is showing deficiency. If your ph really is at 6.0, then they are probably hungry.
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So should I give them some calmag? My other post was from overfeeding as it was a smaller plant that couldn't handle the EC I was giving her. Any help is appreciated :bigjoint:
 
dwc420letsgo

dwc420letsgo

Well-Known Member
Ahh my bad, I assumed it was the same plant lol. Yeah, a little calmag should help. You can try foliar spraying some, should correct any issues pretty quick. Keep in mind, damaged leaves from immobile elements won’t recover (eg rust spots from calcium, etc).
 
Fish scale

Fish scale

Well-Known Member
dwc420letsgo said:
Ahh my bad, I assumed it was the same plant lol. Yeah, a little calmag should help. You can try foliar spraying some, should correct any issues pretty quick. Keep in mind, damaged leaves from immobile elements won’t recover (eg rust spots from calcium, etc).
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Thanks dude, I will buy some calmag tomorrow :weed:
 
Fish scale

Fish scale

Well-Known Member
rkymtnman said:
damn, my well water is only 0.2

i've only had Ca deficiencies on maybe 2 strains over the years with all the Ca in my water
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Yeah man same. There is a lot of calcium in my tap water so I don't think it can be that? On my last thread @hotrodharley was right about 1 of my plants being burned so I'm guessing he is right this time and it's a phosphorus deficiency? I wouldn't have a clue on how to fix it though other than raising my EC?
 
hotrodharley

hotrodharley

Well-Known Member
Fish scale said:
Yeah man same. There is a lot of calcium in my tap water so I don't think it can be that? On my last thread @hotrodharley was right about 1 of my plants being burned so I'm guessing he is right this time and it's a phosphorus deficiency? I wouldn't have a clue on how to fix it though other than raising my EC?
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You can foliar spray Epsom salts to solve any potential magnesium deficiency. 1 tablespoon per 1 gallon of water. Add a drop of liquid soap to help it stay on the leaf. Make sure the salts are scent free! You might try raising your EC slightly. Calcium deficiency appears in your newest growth. Not older leaves.
 
Fish scale

Fish scale

Well-Known Member
hotrodharley said:
You can foliar spray Epsom salts to solve any potential magnesium deficiency. 1 tablespoon per 1 gallon of water. Add a drop of liquid soap to help it stay on the leaf. Make sure the salts are scent free! You might try raising your EC slightly. Calcium deficiency appears in your newest growth. Not older leaves.
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Thanks dude. It's on the newer leaves it is mostly, and a few older ones. But there's already a lot of calcium in my tap water so I'm not sure if it's a calcium issue?
 
Fish scale

Fish scale

Well-Known Member
rkymtnman said:
you should have plenty of Ca between your water and your nutes IMO. there is a reason for the deficiency and i don't think it's a lack of nutes.
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I'm feeding at PH 6.0, so maybe it's not absorbing enough calcium at that PH and I need to raise it to 6.5 for a week and then lower it afterwards?

hydroponics-ph-chart-marijuana.jpg
 
rkymtnman

rkymtnman

Well-Known Member
Fish scale said:
Thanks dude, I will give them 6.5 for a week so they can absorb calcium and magnesium better and see how they react to it. :weed:
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my pH usually goes up for the first few days . so i set it at 5.5 ish and let it go up to 6.5 before i re-adjust . that covers the whole range
 
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