Need advice on potential calmag deficiency first grow.

  • Thread starter FreddieBandz
  • Start date
  • Tagged users None
FreddieBandz

FreddieBandz

7
3
Wassup guys and gals. New to the group and also a new grower. Was wondering if someone could give some advice for my first ever grow. I've got 3 week old plants that have some yellowing starting near the base of the leaf. New leaf are coming in a bit yellow. I've done some searching and i think and am hoping its calmag deficiency but am not too sure. I don't think it's nute lock out since tips aren't burnt. Growing in coco coir perlite mix 70/30. Feeding them the general hydroponics trio. Micro, grow, bloom and calmag. I've been feeding and watering them with distilled water today was my first feeding with tap water.

I've been feeding them for the last week
2ml-calmag
2.5 ml-micro
2.5ml-grow
1ml-bloom
All per gallon of water

Flush every 2-3 days with plain distilled water.

Ph 5.5-5.8
Ppm ~420
Temp-70-78°f
Humidity-45-60%

Lights set up is a spider farmer sf4000 copy got it at 30" above the plants @60% intensity

Usually feed in the morning before work one hour after lights come on
IMG 20210308 235510
around 6am and once at around 11pm one hour before lights turn off
 
IMG 20210308 221330
IMG 20210308 221340
IMG 20210308 221405
IMG 20210308 221352
IMG 20210308 221400
IMG 20210308 224435
IMG 20210308 224446
IMG 20210308 235435
IMG 20210308 224441
IMG 20210308 224458
IMG 20210308 224501
IMG 20210308 235447
IMG 20210308 235533
IMG 20210308 235540
IMG 20210308 235536
IMG 20210308 235518
IMG 20210308 224424
IMG 20210308 224426
IMG 20210308 224421
DankNugz420

DankNugz420

948
143
Welcome! What medium? Just a shot in the dark but my guess is ph maybe a touch low
 
ezenzyme

ezenzyme

434
63
Clear plastic and paper towels is your soil is a no go. Clear plastic will allow light to penetrate your soils base killing off roots. Did you poke holes in the bottom?
Anyhoo color and all looks fine to me, your going to want to wait till they are larger to give em more nutes, doing a run off and slurry test will clear up any PH issues you might be having, provided you PH accordingly after.
 
FreddieBandz

FreddieBandz

7
3
Welcome! What medium? Just a shot in the dark but my guess is ph maybe a touch low
Hello thanks! I'm using a 70/30 mix of botanica coco coir and perlite. I'm going to keep a close eye on the pH on my next feedingd
 
FreddieBandz

FreddieBandz

7
3
What are the tea bags? Nematodes?
No not tea bags lol. What are nematodes?. I used distilled water gallons cut in half and laid a sheet of paper towel in the base to hold the coco and eventually the root mass tighter together so when I transplant to bigger container the coco won't crumble. Coco coir I saw seemed to crumble so easily.
 
FreddieBandz

FreddieBandz

7
3
Clear plastic and paper towels is your soil is a no go. Clear plastic will allow light to penetrate your soils base killing off roots. Did you poke holes in the bottom?
Anyhoo color and all looks fine to me, your going to want to wait till they are larger to give em more nutes, doing a run off and slurry test will clear up any PH issues you might be having, provided you PH accordingly after.
Oh snap didn't know clear plastics could damage the roots. Just had empty gallons of distilled water laying around, just thought I can use them as an intermediate container for the seedlings before I move them to bigger pots. I did poke holes in the bottom to help drain more easily, actually drains pretty well. I was hoping the paper towel will help keep the root mass more compact when I move them over to bigger pots. Quick question what is a slurry test?
 
FreddieBandz

FreddieBandz

7
3
Oh snap didn't know clear plastics could damage the roots. Just had empty gallons of distilled water laying around, just thought I can use them as an intermediate container for the seedlings before I move them to bigger pots. I did poke holes in the bottom to help drain more easily, actually drains pretty well. I was hoping the paper towel will help keep the root mass more compact when I move them over to bigger pots. Quick question what is a slurry test?
I was planning on keeping them on the nute regimen I've been giving at least another week before bumping up the nutes
 
ezenzyme

ezenzyme

434
63
You can look it up on here really you can just do a run off test; test the in water and the out water and we can decipher your PH. Yes letting light hit your roots is no bueno. Your looking pretty good tho really not much to worry about. You running a pretty low PH why? You should be doing 6.3-6.8.
 
dbrzz

dbrzz

100
43
Wassup guys and gals. New to the group and also a new grower. Was wondering if someone could give some advice for my first ever grow. I've got 3 week old plants that have some yellowing starting near the base of the leaf. New leaf are coming in a bit yellow. I've done some searching and i think and am hoping its calmag deficiency but am not too sure. I don't think it's nute lock out since tips aren't burnt. Growing in coco coir perlite mix 70/30. Feeding them the general hydroponics trio. Micro, grow, bloom and calmag. I've been feeding and watering them with distilled water today was my first feeding with tap water.

I've been feeding them for the last week
2ml-calmag
2.5 ml-micro
2.5ml-grow
1ml-bloom
All per gallon of water

Flush every 2-3 days with plain distilled water.

Ph 5.5-5.8
Ppm ~420
Temp-70-78°f
Humidity-45-60%

Lights set up is a spider farmer sf4000 copy got it at 30" above the plants @60% intensity

Usually feed in the morning before work one hour after lights come on View attachment 1100368 around 6am and once at around 11pm one hour before lights turn off
Hello, If you grow in coco the ph is lower for optimal growth, 5.8-6.3 is the range. Soil the range is higher. Distilled water has a PH no less than 7. So using distilled water without reducing the PH to optimum range is stressing your plants and locks out nute uptake. The ph rises more than it falls in my experience, so I adjust to 5.8 so if it rises it is still in range for best growth. I am talking strictly coco coir 70/30 perlite medium here. A plant can survive within PH range 5-8. But it will not thrive if you dont maintain optimum PH range always. Cheers!!
 
lvstealth

lvstealth

Supporter
1,459
163
light is too close, maybe heat high too, but i think it is the light.
 
growsince79

growsince79

6,107
313
Hello, If you grow in coco the ph is lower for optimal growth, 5.8-6.3 is the range. Soil the range is higher. Distilled water has a PH no less than 7. So using distilled water without reducing the PH to optimum range is stressing your plants and locks out nute uptake. The ph rises more than it falls in my experience, so I adjust to 5.8 so if it rises it is still in range for best growth. I am talking strictly coco coir 70/30 perlite medium here. A plant can survive within PH range 5-8. But it will not thrive if you dont maintain optimum PH range always. Cheers!!
Distilled water doesn't need phed. Since it has no buffers it goes to whatever the soil ph is. Adding ph up or down to distilled water is not only unnecessary but probably harmful.
 

Similar threads

Vb2flat2surf
Replies
3
Views
299
Vb2flat2surf
Vb2flat2surf
Vb2flat2surf
Replies
18
Views
242
BionicKroniK
BionicKroniK
Lewish02
Replies
117
Views
2K
Lewish02
Lewish02
716legalgrow
Replies
3
Views
305
TripsRabbit
TripsRabbit
Top Bottom