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InvisibleZombi3
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Anybody know what this is? Defficiency?
    #20397711 - 08/09/14 11:09 PM (9 years, 6 months ago)

In week 4 of veg using advanced nutrients organic line in BM8 soilless mix under 600w hps/300w led, strain is chemo kush. This showed up on 2 plants, hasnt seemed to hinder vertical growth...



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Offlineganjasmuggler

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Re: Anybody know what this is? Defficiency? [Re: Zombi3]
    #20397715 - 08/09/14 11:11 PM (9 years, 6 months ago)

Looks like nutrient burn. Maybe you are feeding them too much?


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InvisibleZombi3
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Re: Anybody know what this is? Defficiency? [Re: ganjasmuggler]
    #20397721 - 08/09/14 11:13 PM (9 years, 6 months ago)

Do you think that would show up randomely and sporadically? Only 2 of 6 plants are affected and 1 of those 2 has had it for 2 weeks (hasnt gotten worse or better) while the 2nd only started showing it this week. They all get fed the same.


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Offlineganjasmuggler

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Re: Anybody know what this is? Defficiency? [Re: Zombi3]
    #20397727 - 08/09/14 11:16 PM (9 years, 6 months ago)

Weird, all plants are different. I know there is somewhere on the internet where it shows examples of all types of burns like that and tells you exactly what causes it. I wish I still had the link for it but just google search problems with weed growing or something like that and you should come across it.

What sort of water are you watering them with?


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InvisibleZombi3
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Re: Anybody know what this is? Defficiency? [Re: ganjasmuggler]
    #20397731 - 08/09/14 11:18 PM (9 years, 6 months ago)

I use tap water. It has a ppm of roughly 160. I dont think its a pH problem either.


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Offlineganjasmuggler

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Re: Anybody know what this is? Defficiency? [Re: Zombi3]
    #20397739 - 08/09/14 11:19 PM (9 years, 6 months ago)

Hmmm a friend of a friend once saw a problem like that when watering with tap water. When she switched to bottled water the problem went away. I'm not sure if its the same thing as like I said earlier there could be a whole host of reasons for burns like that but Idk.


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Offlineganjasmuggler

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Re: Anybody know what this is? Defficiency? [Re: Zombi3]
    #20397742 - 08/09/14 11:20 PM (9 years, 6 months ago)

Do you let the water sit for 24 hours before you water your plants to evaporate the chlorine? It could also be that you have hard water.


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InvisibleZombi3
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Re: Anybody know what this is? Defficiency? [Re: ganjasmuggler]
    #20397757 - 08/09/14 11:25 PM (9 years, 6 months ago)

No I dont let it sit out, but I could have a 5 gallon bucket full with a bubbler going in it 24/7 for all my watering needs. I will try that. How confident are you that its burn? That would mean 2/6 plants from the same batch of seeds has a lower tolerance for the nutrient schedule im using. :shrug: I understand there is genetic variance but i dont know


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InvisibleZombi3
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Re: Anybody know what this is? Defficiency? [Re: Zombi3]
    #20397762 - 08/09/14 11:29 PM (9 years, 6 months ago)

I dont think its burn... I am leaning toward a defficiency


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Offlineganjasmuggler

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Re: Anybody know what this is? Defficiency? [Re: Zombi3]
    #20397865 - 08/10/14 12:23 AM (9 years, 6 months ago)

It doesn't look like deficiency to me and it doesn't make sense that it would be a deficiency if you are already on a nutes program. I am not an expert though so maybe you should wait for someone who is.


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Re: Anybody know what this is? Defficiency? [Re: ganjasmuggler]
    #20398647 - 08/10/14 08:49 AM (9 years, 6 months ago)

Do you even ph?  Do you even ppm?

Its going to be really hard to judge whats going on exactly.

It could be a cal-mg related lockout or something related to over nuting.

I just don't see what you gave as enough information to really diagnose anything.



Please fill out something like -

Soil Growers:
1. Are you growing from seed or clones?
2. How old are your plants?
3. How tall are your plants?
4. What size containers are they planted in?
5. What is your soil mix?
6. How often do you water and what type of water do you use and how much you give per watering?
7. What is the pH of your water?
8. What kind of fertilizer do you use and what is its NPK ratio?
9. Do you foliar feed or spray your plants with anything?
10. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights")
11. How close are your lights to the plants?
12. What size is your grow space in square feet?
13. What is the temperature and humidity in your grow space?
14. What is the pH of the soil?
15. Have you noticed any insect activity in your grow space?
16. How much experience do you have growing?

Hydro Growers:
1. Are you growing from seed or clones?
2. How old are your plants?
3. How tall are your plants?
4. What type of hydro system are you using?
5. What brand/type of nutrients are you using?
6. What is the Ph of your nutrient solution?
7. What is the PPM/EC of your tap water?
8. What is the PPM/EC of your nutrient solution?
9. What is the temperature of your nutrient solution?
10. Does your PPM/EC show a rise or fall when you do your daily PPM check?
11. Does your pH show a rise or fall when you do your daily check?
12. Do you foliar feed or spray your plants with anything?
13. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights")
14. How close are your lights to the plants?
15. What size is your grow space in square feet?
16. What is the temperature and humidity in your grow space?
17. Have you noticed any insect activity in your grow space?
18. How much experience do you have growing?


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Invisibleprismism
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Re: Anybody know what this is? Defficiency? [Re: Zombi3]
    #20398747 - 08/10/14 09:41 AM (9 years, 6 months ago)

If it's just on a few leaves on a few plants then you shouldn't really worry too much. Your plants look fine aside from some of those leaves. Cal/mag lockout sounds like the best diagnosis I've seen yet, but it's difficult to tell.
Use this website. It's the most comprehensive I've ever found.


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InvisibleZombi3
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Re: Anybody know what this is? Defficiency? [Re: POWAtrippin]
    #20398861 - 08/10/14 10:29 AM (9 years, 6 months ago)

Soil Growers:

1. Are you growing from seed or clones?
= Seed!
2. How old are your plants?
= 8 weeks
3. How tall are your plants?
= 18-24 inches
4. What size containers are they planted in?
= 3 gallon
5. What is your soil mix?
= 5 parts BM8, 1 part manure, .5 part worm compost.
6. How often do you water and what type of water do you use and how much you give per watering?
= I water every 2-3 days depending on soil moisture. I use tap water with a ppm of roughly 160, I have never had issues with it before. I give each 3 gallon pot 1-2 litres 1-2 times a day on each watering day.
7. What is the pH of your water?
= 6.6-6.9
8. What kind of fertilizer do you use and what is its NPK ratio?
= Advanced Nutrients Organic Line. Including Iguanna grow/bloom, Bud Candy, Big Bud, and Nirvanna.
9. Do you foliar feed or spray your plants with anything?
= I foliar fed them in week 1-2 of vegetative with a weak solution of chelated iron and magnesium sulfate to correct a small iron defficiency, the problem was solved and foliar feeding was ceased.
10. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights")
= 1 x 600W HPS in a cooltube vented properly, and 1 x 300W full spectrum LED.
11. How close are your lights to the plants?
= At the moment there is 3ft between the light and the canopy.
12. What size is your grow space in square feet?
= 3x3 tent so 9 square feet.
13. What is the temperature and humidity in your grow space?
= Air temp is 74-78F at floor, 76-78F at canopy and 84-88F above the light. Leaf surface temp is 74-79F. Humidity is 55%.
14. What is the pH of the soil?
= Havent actually tested this but suspected to be same as feed water because the soil is mostly inert.
15. Have you noticed any insect activity in your grow space?
= Very small amount of fruit flies from the next room over but they arent paying attention to the plants. Maybe 5 in the tent total and they are not there everyday.
16. How much experience do you have growing?
= 5 years outdoor cannabis, 1 year indoor cannabis, 6 years random other plants, I also have a greenhouse technician diploma from college.

Extra info:
This is my first time growing out these seeds. They are seeds I produced myself from two seedlings obtained from a medical grower. He gave me the two unsexed seedlings which I flowered and let pollinate to make hundreds of seeds, these plants are the produced baby seed.

I had a friend watch them for 48 hours and they missed a watering so they wilted temporarily and suffered minor leaf loss but recovered quickly.

I always add 1-2 drops of sunlight dish detergent to my water.

My light schedule is setup like this:
HPS is on from 8am-2am which is an 18on/6off schedule.
LED is on from 7am-3am which is a  20on/4off schedule.
- I did this so my plants would wake up to less intense LED light before having the HPS kick on to sort of try and mimic the natural increase of light throughout the morning outdoors. The extra hour of LED after the HPS turns off I could get rid of, I only really wanted the extra hour of less intense light in the morning and added the extra hour at night just to make it a 20/4 schedule instead of a strange to look at on paper 19/5 schedule lol.


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InvisibleZombi3
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Re: Anybody know what this is? Defficiency? [Re: Zombi3] * 1
    #20423983 - 08/15/14 06:08 PM (9 years, 6 months ago)

For anyone interested it was Mg defficiency. I fixed it by foliar feeding epsom salt! :thumbup:
That was my quick solution now I have supplemented Mg in my feeding program to amend the source of the problem!


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InvisibleMrGiraffe

Registered: 04/04/14
Posts: 3,149
Re: Anybody know what this is? Defficiency? [Re: Zombi3]
    #20424293 - 08/15/14 07:28 PM (9 years, 6 months ago)

There's also some sulfur deficiency going on as well (epsom salt will fix that too).  If you look in your 2nd picture, the new growth is twisted/stunted and very yellow.  Most soils are lacking in proper levels of MG for vegging.  Kush varieties are also typically heavy feeders and need the extra MG.  You can dial it back some after the first couple weeks of flowering stage.  Also 36" above the canopy is pretty high up, drop that down to around 12", part of the beauty of a cool tube is being able to get the lights as close as possible without burning the plants from the heat.


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InvisibleLunarEclipse
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Re: Anybody know what this is? Defficiency? [Re: Zombi3]
    #20426186 - 08/16/14 08:13 AM (9 years, 6 months ago)

Quote:

Zombi3 said:
For anyone interested it was Mg defficiency. I fixed it by foliar feeding epsom salt! :thumbup:
That was my quick solution now I have supplemented Mg in my feeding program to amend the source of the problem!




A few comments, FWIW.

Your "soil" mix is almost pure compost.  WAY too heavy IMO.  Hard to keep a good water balance hence you have to wait to water but don't wait too long.  In short, ditch all that "shit"!  You can always add shit later, but if you are growing in muck, it ain't good.  Also, just tons of bugs in that shit.  Fungal gnats go nuts.  Answer?  75% Royal Gold Coir, 25% perlite mix.

Your tap water is really that low in pH at 160 PPM?  Seems like it might be alkaline at that hardness.  Obviously you really don't have the right balance of minerals hence you are searching for your answers.  The real answer = get yourself an RO system, and start from "scratch".  Add Canna Coir A&B if you want to keep it simple and inorganic.  pH your water first with phosphoric acid.  This ties in with the coir recommendation.  You can also go organic on top of say Cali-Magic which adds calcium, magnesium and iron and a little nitrogen.

Foliar feeding.  Please, just say no. Better yet, start training your plants to uptake a portion of their water from the roots by watering with a cup in the saucer and the other 2/3 or so on the top.

Lights.  18/6 is more than enough hours of daylight.  Other than the Arctic, where on earth are there 20 hours of daylight?  Your plants really want 16/8, and your electric bill will drop too.


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InvisibleZombi3
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Re: Anybody know what this is? Defficiency? [Re: LunarEclipse]
    #20429636 - 08/16/14 08:37 PM (9 years, 6 months ago)

My soil is far from muck...???:confused:
My soil is fluffy and smells lovely and theres no dam bugs in there!:tongue:

I just got my water tested at my local college and my vegging mixs pH was 6.1 using tap water. The water comes out of the tap at a pH of 7.1-7.3 here and at a ppm of roughly 160. Then I mix my shit and it becomes pH 6.1 and 1100-1500us/cm2.

Why are you against foliar feeding? Its very effective for many reasons..

Lights... well honestly Im not paying the hydro bill and I like to experiment so 20 hours of light is what the girls see :thumbup:


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InvisibleLunarEclipse
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Re: Anybody know what this is? Defficiency? [Re: Zombi3]
    #20431647 - 08/17/14 07:59 AM (9 years, 6 months ago)

Quote:

Zombi3 said:
My soil is far from muck...???:confused:
My soil is fluffy and smells lovely and theres no dam bugs in there!:tongue:

I just got my water tested at my local college and my vegging mixs pH was 6.1 using tap water. The water comes out of the tap at a pH of 7.1-7.3 here and at a ppm of roughly 160. Then I mix my shit and it becomes pH 6.1 and 1100-1500us/cm2.

Why are you against foliar feeding? Its very effective for many reasons..

Lights... well honestly Im not paying the hydro bill and I like to experiment so 20 hours of light is what the girls see :thumbup:




Your soil looked like it was all compost.  I still say coir/perlite beats the socks off any soil mix you can come up with.  Watering issues disappear.

Your water is indeed alkaline, as I thought.  Not too much, but some.  Your minerals in the water are clearly an unknown.  160 ppm is pretty hard water.  Far better to start with RO, and add back.  Then you know what you are doing, and can be consistent with it.

Your feeding levels if recommended by a fertilizer company like FoxFraud for example, are quite high.  They love to sell more ferts, you can usually go 1/2 what they "recommend" and do better.

Foliar feeding is a bad idea, for a number of reasons.  This from someone who used to be a real believer in it.  Don't spray shit on your plants!  Why the hell would you want to do that?  Effective?  No, it's desperate measures taken as last resorts.  Like spraying epsom salts on your leaves.


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Edited by LunarEclipse (08/17/14 08:03 AM)


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InvisibleMrGiraffe

Registered: 04/04/14
Posts: 3,149
Re: Anybody know what this is? Defficiency? [Re: LunarEclipse]
    #20431693 - 08/17/14 08:28 AM (9 years, 6 months ago)



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