5 weeks flower, possible nute def advice needed

G

gr33n*giant

Member
Hi All
AMS 5 weeks in,
indoors under 400W hps
gallon pots of plagron all mix
using bio bizz grow and bloom too schedule every other feed
drinking just over 1 1/2L water (tap, left standing) every 3 days
last feed was 1/2 tsp epsom with molasses
pic should show leaves yellowing between veins,
was thinking mag or iron def
all polite :-P suggestions gratefully received
thanks in advance
GG
 

Attachments

Mother's Finest

Mother's Finest

Well-Known Member
Well it's not Iron deficiency. Magnesium could be an issue but if it is, it's not the only one. By itself, Mg def shouldn't cause that sort of leaf curl. There might be signs of heat stress in the pic. What are the temps? Every three days is probably too often to water. Make sure when you water that the soil at the bottom of the pot gets moistened. Watering slowly helps give the liquids time to spread throughout the soil before just running out the bottom. You want a handful of soil to only drip a few drops when squeezed. Wait until about the top third of the soil is bone dry before watering again.

I wouldn't call Epsom Salts food, more of a micronutrient supplement. Molasses I'd call a soil sweetener. When was the last time you gave them your regular fertilizers?
 
C

Cheese2011

Active Member
im having the same problem with biobizz you need there algamic product use it at the same times as grow bloom and topmax
 
Mother's Finest

Mother's Finest

Well-Known Member
And you two aren't the only ones. We don't use premixed fertilizers and prefer to make fresh stuff, but I've seen more than a few people have troubles with that brand. For people who don't have the time to make teas, growers appear to have fewer/less intense feeding problems when using the Fox Farms liquid mixes than with some others.
 
G

gr33n*giant

Member
Mother's Finest said:
Well it's not Iron deficiency. Magnesium could be an issue but if it is, it's not the only one. By itself, Mg def shouldn't cause that sort of leaf curl. There might be signs of heat stress in the pic. What are the temps? Every three days is probably too often to water. Make sure when you water that the soil at the bottom of the pot gets moistened. Watering slowly helps give the liquids time to spread throughout the soil before just running out the bottom. You want a handful of soil to only drip a few drops when squeezed. Wait until about the top third of the soil is bone dry before watering again.

I wouldn't call Epsom Salts food, more of a micronutrient supplement. Molasses I'd call a soil sweetener. When was the last time you gave them your regular fertilizers?
Click to expand...
cheers
last nute feed was 6 days ago, topped up 2 days ago with epsom and molasses roughly 500ml's
just fed till tiny runoff with plain tap, both took 1 1/4 L's
i normally hand weigh the pots, succesful till had to add another 7 ladies from clone stock, now i am trying to balance so i dont have to individually water every day.
should be nute feed next, was thinking half bio-bizz schedule and see.
as for N def the leaves are 2/3rds up the main cola, wouldnt N def start at bottom?
cheers for all replies
GG
thanks again
 
Snow Crash

Snow Crash

Well-Known Member
Text book Magnesium deficiency.

Perhaps as a result of nutrient imbalance rather than low levels of magnesium. I suggest you try and tune back your calcium and potassium usage for a little while and see if this improves the uptake of magnesium. Also, taking your pH to closer to 6.6 in the soil will help make the Mg more available.

Damage done is damage done. Just make sure nothing new shows up. Your plant probably just doesn't need the bloom food at full strength.
 
G

gr33n*giant

Member
Snow Crash said:
Text book Magnesium deficiency.

Perhaps as a result of nutrient imbalance rather than low levels of magnesium. I suggest you try and tune back your calcium and potassium usage for a little while and see if this improves the uptake of magnesium. Also, taking your pH to closer to 6.6 in the soil will help make the Mg more available.

Damage done is damage done. Just make sure nothing new shows up. Your plant probably just doesn't need the bloom food at full strength.
Click to expand...
cheers
i was thinking foliar spray, but its almost 5 weeks flower.
i have not ph'd water for a while but other 11 ladies dont seem to have an issue (though they are 1-3 weeks in)
i will drop too half strength bloom on next feed
also some more pics

cheers
GG
 

Attachments

tdizzle

tdizzle

Active Member
I have the same thing happening to a couple of my plants. I assume it is nutrient burn. I think this because I can see some nutrients not washing off the entire root system after a spray...I just flush the system.
 
G

gr33n*giant

Member
tdizzle said:
I have the same thing happening to a couple of my plants. I assume it is nutrient burn. I think this because I can see some nutrients not washing off the entire root system after a spray...I just flush the system.
Click to expand...
hydro or soil, am soil myself.
will try a bit of snow (no uk pun intended!) and let you know, after plain water last nite, it seems to be worse.
cheers
GG
 
Tahmi.Guhnn

Tahmi.Guhnn

Active Member
gr33n*giant said:
cheers
i was thinking foliar spray, but its almost 5 weeks flower.
i have not ph'd water for a while but other 11 ladies dont seem to have an issue (though they are 1-3 weeks in)
i will drop too half strength bloom on next feed
also some more pics

cheers
GG
Click to expand...
that looks a hell of a lot like magnesium defficency, but i dont think its a deffeciency in the soil, more like a nutrient or pH lock up, since you said you were using epsom salt. id suggest possibly flushing the soil and if that doesn't work try uping the epsom. but for some reason or another it doesn't seem to be getting the nitrogen to the plant.
 
*BUDS

*BUDS

Well-Known Member
id flush out system, no nutes for 7 days, only watering if needed then resume nutes at half str .stop feeding for last 2 weeks.
 
tdizzle

tdizzle

Active Member
I'm growing on a aeroponic table. I flushed my system for 24hrs and it seemed to stop the problem. I know a soil flush is a different story so good luck!
 
You must log in or register to reply here.
Top