brown spots in lower leaves, 10 days into flowering

[sero!]

I´ve noticed those little spots in the lower leaves and can´t find what can be causing them, it could be a lack of calcium, but im not sure. Hope you can help me!

Strain of Mj? CARAMELICIOUS
Hydroponic or soil? SOIL
From seed or clone? CLONE
Age of plant in question? 8 weeks
What stage (Veg/Flower; how many days into)? FLOWERING
Medium (Soil, Rockwool, Hydroton etc.)? SOIL
Container/Pot size? 2 LT
Have they been transplanted, if so how long ago? NEVER
If soil, composition ratios (peat moss, perilite, vermiculite etc.)? 3 parts top soil, 1/2 EWC, 1/2 compost, 1 perlite,
Water runoff Ph?
Nutrients added? 40 grs bone meal, 1 tblspoon blood meal in each pot
Ratios of nutrients (N% P% K%)?
Feeding schedule? never, only the meals when I prepared the soil
When were they last fed/watered? yesterday, water only
How are you determining when to feed/water (weight, wilting, etc.)? WEIGHT
TDS/EC/PPM?
Tap/RO/Distilled water? tap water, let some time for chlorine to evaporate
Ph before and after adding nutrients?
Is your Ph equipment properly calibrated?
Light intensity/Age of bulb/Wattage? 400 W HPS
Distance to the canopy? 40 cm
Temps at canopy? 29 C
Temps at root zone or reservoir?
Day/Night temps (Min.-Max.)? 20 - 30
Current air flow (CFM)?
Is there air blowing directly onto plant? yes
Using CO2? no
Relative humidity? around 50%
Growing technique (Scrog, Sog, Supercropping etc.)? SOG
Has plant recently been pruned, clones taken, fimmed or pinched? NO
Pests? NO
Chemicals used to irradicate? NONE
If so,When?

 

[Core]

mmmmh i'm not completly shure on this...but i do have them spots when i go overboard on the PK13/14 i'm using in late flower...could be you put a little to much ,bone and blood meal init....but i can't put my finger on it ...if its the P or the K that is causing it..

 

[40AmpstoFreedom]

How big are those plants?
What is your PH?

You have very tiny pots...2 litres is nothing and on top of that you put all that organic fert in a tiny pot? I believe it's a table spoon of bone and blood meal per gal not 2 litre and that's an extremely general mix.

It looks like ph problem to me combined with root bound or a bad mix giving you all this weird stuff. Without some questions answered though it will be hard for the knowledgeable around here to help.

 

[sero!]

mmmmh i'm not completly shure on this...but i do have them spots when i go overboard on the PK13/14 i'm using in late flower...could be you put a little to much ,bone and blood meal init....but i can't put my finger on it ...if its the P or the K that is causing it..

thank you for the answer, i was wondering if the amount of bone meal cpuld cause this problem, perhaps it was too much...

 

[sero!]

How big are those plants?
What is your PH?

You have very tiny pots...2 litres is nothing and on top of that you put all that organic fert in a tiny pot? I believe it's a table spoon of bone and blood meal per gal not 2 litre and that's an extremely general mix.

It looks like ph problem to me combined with root bound giving you all this weird stuff.

they´re 1 ft (0,3 cm) tall, and im not testing the ph right now, tomorrow i´ll do it and post it, as well as some pics of the rootballs.


and i agree with you, too much ferts, got to go easy next time.


thank you for the answer!

 

[40AmpstoFreedom]

Yea, cores definitely onto it also. I think some fo the spotting is ph spotting. Make sure you check your ph.


I would prepare another mix to transplant into a gal pot and follow one of the recipes in this thread:

http://www.icmag.com/ic/showthread.php?t=36542

Or use blazeoneup's mix.


2 cu ft of promix
2 cu feet of miracle grow organic soil (green bag with veggies on front)
1 Cup bone meal
1 Cup blood meal
1/2 cup lime

Now for the bone and blood meal I use half miracle grow organic and half fox farm blood and bone meal. I do this because I believe it offers a wider spectrum of resources to the plants that they can draw from and the NPK ratios.

I can literally feed most plants simply water and cal mag until harvest ( I set ph to 6.1 to 6.4). If they are 70 day strains I feed them teas which are easy as hell to make and since the soil is so damn good you can just make 2 1/2 gal batches and dilute it at 3 litres to 5 gal bucket of aerated water.


Just a suggestion hope you get this figured out. Good luck!

 

[sero!]

Yea, cores definitely onto it also. I think some fo the spotting is ph spotting. Make sure you check your ph.


I would prepare another mix to transplant into a gal pot and follow one of the recipes in this thread:

http://www.icmag.com/ic/showthread.php?t=36542

Or use blazeoneup's mix.


2 cu ft of promix
2 cu feet of miracle grow organic soil (green bag with veggies on front)
1 Cup bone meal
1 Cup blood meal
1/2 cup lime

Now for the bone and blood meal I use half miracle grow organic and half fox farm blood and bone meal. I do this because I believe it offers a wider spectrum of resources to the plants that they can draw from and the NPK ratios.

I can literally feed most plants simply water and cal mag until harvest ( I set ph to 6.1 to 6.4). If they are 70 day strains I feed them teas which are easy as hell to make and since the soil is so damn good you can just make 2 1/2 gal batches and dilute it at 3 litres to 5 gal bucket of aerated water.


Just a suggestion hope you get this figured out. Good luck!

thank you for the feedback, as im in south america im waking up when you guys are going to bed, and that´s not the only problem , I can´t get the commercial mixes you´re suggesting. For the ph issue i dont have a ph meter to test the soil, but i have some paper stripes, i´ll check next watering and menawhile i put a sample in a glass of water for testing it later, i don´t know if it is the best way to test soil, but ph meters are expensive (at least for me) and can´t afford one right now.

 

[Hazy Lady]

When you get brown spots, as you have, it is near impossible to isolate an element causing the problem, it looks like no regular problem and you can be 99% certain it is a huge PH problem causing multiple nutrient deficits, either end of the spectrum, too acid or too alkaline but it is one of them, you need to test the run off to get to the bottom of this - and fast!

 

[sero!]

thank you all you people for the help. I think the problem was too much fertilizer, i`ll put less the next round and use one of the recipes in these great thread http://www.icmag.com/ic/showthread.php?t=36542. By now the problem is not getting worst, and not showing in all plants, so i`ll let things like they´re and be more careful in the future.

 

[40AmpstoFreedom]

Great news serol! Be sure to post pics of your ladies finishing glad you got this in order

 

[Soulman869]

looks like maybe over feed, coupled with ph issues. check your ph good, you could maybe flush as well, that'll level everything off. really though, unless the problem progresses, i wouldn't say you have too much to worry about, lower fan leaves die as the plant matures, especially in flowering, your plant is extracting needed nutrients from it's lower leaves to feed growth towards the top