Need Help on Leaf Diagnosis

[fireman22]

Hey all HELP ME!

My plants started to brown around the edges and in the middle of the leaves. I trimmed some leaves and lower buds today and 5 days ago. I think the cause is nute burn. I flushed 5 days ago to try to solve the problem. It didn't get better but worse. I then thought it was a micronutrient problem so I bought Big Bloom to solve. I fed it today with it. I still think I may have nute burn so I am laying of the Tiger Bloom until I am sure what is going on. I also feed with Blackstrap Molasses for the sugar boost.

Help me out! Am I correct its Nute burn and what should I do?

Strain of Mj? Bagseed
Hydroponic or soil? OF Soil
From seed or clone? Seed
Age of plant in question? 9/21 was start date
What stage (Veg/Flower; how many days into)? Flower ~2 weeks
Medium (Soil, Rockwool, Hydroton etc.)? Fox Farm Ocean Forest Soil mixed with extra perlite and Myke's Mychorizaee (sp?)
Container/Pot size? 3-4 Gal
Have they been transplanted, if so how long ago? One week before flower
If soil, composition ratios (peat moss, perilite, vermiculite etc.)? extra perlite and Myke's Mychorizaee
Water runoff Ph?
Nutrients added? Fox Farm Tiger Bloom (2-8-4) Big Bloom (.01-.3-.7) Plantation Blackstrap Molasses, and Snow Storm Ultra (0-0-3)
Feeding schedule? At first it was just fed with Tiger Bloom. I worked up from to 1/2 TBSP/GAL for the first week and a half every watering which was once a day. I eventually reached up to 2 TBSP/Gal. I also fed with blackstrap about 2 TBSP/Gal and I foliar spray with the Snow Storm every morning.
When were they last fed/watered? Tonight fed with big bloom for the first time 2tbsp/gal
How are you determining when to feed/water (weight, wilting, etc.)? I feel the soil.
TDS/EC/PPM? No
Tap/RO/Distilled water? Tap
Ph before and after adding nutrients? No
Is your Ph equipment properly calibrated?
Light intensity/Age of bulb/Wattage? 400 W Lumantek HPS
Distance to the canopy?2 ft
Temps at canopy?75 F
Temps at root zone or reservoir?60F
Day/Night temps (Min.-Max.)?75-60 F
Current air flow (CFM)? just a fan
Is there air blowing directly onto plant? yes
Using CO2? no
Relative humidity? dry
Growing technique (Scrog, Sog, Supercropping etc.)? LST
Has plant recently been pruned, clones taken, fimmed or pinched? I trimmed the and pruned
Pests? no



The Girls appreciate it Thanks

 

[hazy]

You have some cal-mag issues. Almost always caused by dropping pH in your medium, not surprising by your heavy feeding. And yeah, there's a little nute burn too. Maybe flush and only give light nutes.

 

[VenturaHwy]

"I also fed with blackstrap about 2 TBSP/Gal and I foliar spray with the Snow Storm every morning."

Stop folar feeding, when the solution dries it becomes concentrated and can burn the leaves.

"Temps at canopy?75 F
Temps at root zone or reservoir?60F
Day/Night temps (Min.-Max.)?75-60 F"

These could be warmer...

 

[fireman22]

You have some cal-mag issues. Almost always caused by dropping pH in your medium, not surprising by your heavy feeding. And yeah, there's a little nute burn too. Maybe flush and only give light nutes.

Should I try to raise the pH then?

 

[Bazarocka]

I have to agree with Hazy. This helps with the cal/mag problem

http://www.americanagritech.com/product/product_detail.asp?ID=1&pro_id_pk=10

 

[noreason]

Fireman,
those brown spots are probably a calcium deficiency.
A calcium def. start on the edges of the leaves and then brown spots appear on the leaf.
Take a look if you have white spots on the other leaves,especially lower big fan leaves.
Calcium is best absorbed with high ph,over 6,5.Sure you need to check your tap water!it's very important.
If you want to solve this,feed plants with any fertilizer with Calcium inside.
For a fast feed,foliar spray with any calcium supplement.Remember to spray UNDER the leaves too.
Try to feed them with Ca asap,or yelding will be decreased or in the worste case it can lead to other micro-elements def.

Here are all Ca def...mine and not mine.

 

[pappy crukk]

hell yeah for just water

hell yeah for just water

most readers dont read the post write cuzz all the big words its a plant all it needs is water you dont really havet to feed untill plant is mature an still what makes buds is time an light high nutes burn shit up eazy low nutes hardly feed

 

[fireman22]

Update. Just fed with plain water today. I was looking on another website and now I think it may have a magnesium deficiency too because the tips are curling up and it is on the older leaves mainly. I do agree with you NOREASON i do need to take care of this asap. I was thinking about using both Epsom salt or lyme maybe. Also I am going to treat for the calcium deficency. anyone have any recs for ferts
(organic)?

Also check out the journal on this grow http://www.icmag.com/modules/Journal/viewentry.php?journalid=251

 

[OC80]

why not buy a bottle of calmag for 18 bux and fix both said problems?

 

[skeeterpeep]

i just went thru ,what seems to be ,the same problem as you. if yer nutes have cal and mag in them then you have a lock out most likely. dont feed it shit rite now believe me!! cuz the soil will just load up and youll stay locked out. flush and light nutes like hazy said. if it gets worse you will have to correct the ph in your medium before you can feed. i used one tsp. of powdered dolimite lime sprinkled evenly around the soil cept stay away from the stem base a couple of inches. then just water with a ph correct water. i have been using str8 ro water witch is a ph of 6.5-7 it seems to vary a bit. not sure why,it could be the machine i go to.any ways, i keep watering untill the ph moves in the dirrection you want before you feed. the powded lime takes a little time but just be paitient and youll do ok.

 

[noreason]

As I said I think it'a Ca def.Maybe it is possible combined with a Mg one.
Now I really don't know your grow details,but if you need try to do a great flush before give other nutes,in this way you will know no nutes are inside the soil,or at least very few.
Flush them with the double volume of your pot,with pHed TAP water!Normally tap water has a quite big amount of Ca and Mg in it.
After you flush you can try to foliar feed with any Ca&Mg supplement,also a Mix of micronutes should works fine.Keep pH quite high,over 6,5.Ca,Mg and other nutes are best absorbed at high level of pH.
If you have any product,with enzymes,humic or fulvic acid and so,you can use it in the flush and after.Fulvic acid would be the best IMO.It helps the plant recover quickly by absorbing nutes faster and other little things.
Hope your plants recover soon,bro.

 

[fireman22]

i'm using 5 gal buckets what's the cheapest way to flush with phed water since i'll need a total of at least 30 gallons

 

[noreason]

i'm using 5 gal buckets what's the cheapest way to flush with phed water since i'll need a total of at least 30 gallons

Cheapest?I'm not native English,maybe I don't understand...however you need a pH test(it's better you buy a liquid one,very cheap) and probably an acid to low your pH,or a base(hope it's the right word) to raise your pH if it's too low.This depend by your tap water.In most cases tap water is alkaline and you need an acid to low its pH.Acids are sold in any growshop called PH-.
That's all you need.
ps:as acid you can use lemon juice or winegar too...both of them are not so potent to low pH and leave residues.So it's not so recommended tu use.

 

[bluntt]

its cal toxic or def with is ur tap water ppm i believe u should sustain enough calcium with just tap i see you mention tiger bloom which has calcium in it and all the microbes you need but if you used ff grow big it dosent have calcium in it if the bottle say it does its an company error

 

[Mo. G]

give it water for a bit.. your soil has food in it. it looks like cal-mag issue but im gonna assume its too much nutes..hit it with plain water for a week or two she should come around. good luck

 

[CovertCrops]

I may have missed it but I didnt see any mention of your ph. I grow hydro so i dont know dirt but it looks like ph spotting/lockout. What is the ph of the mix you feed them and what is the ph of your soil? You can try to feed them anything you want but if the ph is wrong they cant take it up. test your soil ph before you do anything, and always make sure your mix's ph is right. good luck.