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Offlinecharlymanson
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Registered: 04/25/12
Posts: 46
Loc: Canada Flag
Last seen: 2 years, 5 days
Brown/yellowish spots on leaves, first DWC
    #628366 - 06/18/12 10:34 PM (4 years, 5 months ago)

Hello, I've been getting these yellowish brown spots on my leaves lately and I've only used a tsp of nutes in a 9 gallon res. Wondering what it could be, ive been using the lucas formula with flora micro and bloom.

Hydro Growers:
1. Are you growing from seed or clones? Seed
2. How old are your plants? 34 days
3. How tall are your plants? 6 inches
4. What type of hydro system are you using? DWC
5. What brand/type of nutrients are you using? FloraMicro and FloraBloom by GH, also rapidstart
6. What is the Ph of your nutrient solution? 6.0-7.0 ish
7. What is the PPM/EC of your tap water? Not Sure
8. What is the PPM/EC of your nutrient solution? Not Sure
9. What is the temperature of your nutrient solution? Not Sure
10. Does your PPM/EC show a rise or fall when you do your daily PPM check? Not Sure
11. Does your pH show a rise or fall when you do your daily check? fall
12. Do you foliar feed or spray your plants with anything? No
13. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights") 400 Watt MH
14. How close are your lights to the plants? 1 foot
15. What size is your grow space in square feet?  32x32x64 inch
16. What is the temperature and humidity in your grow space? 88 F & 10 % humidity
17. Have you noticed any insect activity in your grow space? No
18. How much experience do you have growing? Only grew in soil before

Update pic: Big Bang Day 51 TnT Kush Day 45 Pure Kush Day 25


Thanks for everyone's help I think everything is fine now. Most of the brown spots are gone.


Edited by charlymanson (07/01/12 10:52 PM)


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Offlinebudgrowerwannabe
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Registered: 01/28/12
Posts: 3,174
Last seen: 17 days, 21 hours
Re: Brown/yellowish spots on leaves, first DWC [Re: charlymanson]
    #628379 - 06/19/12 01:08 AM (4 years, 5 months ago)

dont know if thats enough info.  need to narrow it down a little


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OfflinePilze
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Registered: 10/11/09
Posts: 770
Last seen: 3 years, 5 months
Re: Brown/yellowish spots on leaves, first DWC [Re: charlymanson]
    #628380 - 06/19/12 02:01 AM (4 years, 5 months ago)

Quote:

charlymanson said:
Hello, I've been getting these yellowish brown spots on my leaves lately and I've only used a tsp of nutes in a 9 gallon res. Wondering what it could be, ive been using the lucas formula with flora micro and bloom.





lucas formula is 8ml micro and 16ml bloom per gallon, if you put in "a tsp of nutes" into 9 gallons, you're way off man...

lucas formula for 9 gallons would be: 72mL Micro and 144mL Bloom

also, if youre using reverse osmosis for your DWC, pick up a bottle of general hydroponics calimagic. its a calcium, magnesium, and iron supplement. RO needs it.


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Offlineviper33802


Registered: 04/04/12
Posts: 142
Last seen: 4 years, 11 days
Re: Brown/yellowish spots on leaves, first DWC [Re: Pilze]
    #628397 - 06/19/12 07:40 AM (4 years, 5 months ago)

please fill this out

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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InvisiblebrainsOplenty
ganja farmer
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Registered: 05/14/11
Posts: 729
Loc: zion
Re: Brown/yellowish spots on leaves, first DWC [Re: viper33802]
    #628462 - 06/19/12 05:54 PM (4 years, 5 months ago)

read this


--------------------
it's written right here.
it's absolutely clear.
the ganja herb is the healing of the nation.


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InvisiblebrainsOplenty
ganja farmer
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Registered: 05/14/11
Posts: 729
Loc: zion
Re: Brown/yellowish spots on leaves, first DWC [Re: brainsOplenty]
    #628463 - 06/19/12 05:56 PM (4 years, 5 months ago)

are you checking your PH?
that's my first thought.
if ph is good, then lack of a cal-mag supplement would be my second thought.


--------------------
it's written right here.
it's absolutely clear.
the ganja herb is the healing of the nation.


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InvisiblebrainsOplenty
ganja farmer
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Registered: 05/14/11
Posts: 729
Loc: zion
Re: Brown/yellowish spots on leaves, first DWC [Re: brainsOplenty]
    #628464 - 06/19/12 05:57 PM (4 years, 5 months ago)

but like viper said, fill out the form.
it helps us to determine your problem.


--------------------
it's written right here.
it's absolutely clear.
the ganja herb is the healing of the nation.


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Offlinecharlymanson
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Registered: 04/25/12
Posts: 46
Loc: Canada Flag
Last seen: 2 years, 5 days
Re: Brown/yellowish spots on leaves, first DWC [Re: brainsOplenty]
    #628529 - 06/20/12 01:05 AM (4 years, 5 months ago)

Hydro Growers:
1. Are you growing from seed or clones? Seed
2. How old are your plants? 34 days
3. How tall are your plants? 6 inches
4. What type of hydro system are you using? DWC
5. What brand/type of nutrients are you using? FloraMicro and FloraBloom by GH, also rapidstart
6. What is the Ph of your nutrient solution? 6.0-7.0 ish
7. What is the PPM/EC of your tap water? Not Sure
8. What is the PPM/EC of your nutrient solution? Not Sure
9. What is the temperature of your nutrient solution? Not Sure
10. Does your PPM/EC show a rise or fall when you do your daily PPM check? Not Sure
11. Does your pH show a rise or fall when you do your daily check? fall
12. Do you foliar feed or spray your plants with anything? No
13. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights") 400 Watt MH
14. How close are your lights to the plants? 1 foot
15. What size is your grow space in square feet?  32x32x64 inch
16. What is the temperature and humidity in your grow space? 88 F & 10 % humidity
17. Have you noticed any insect activity in your grow space? No
18. How much experience do you have growing? Only grew in soil before


Edited by charlymanson (06/20/12 01:08 AM)


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InvisiblebrainsOplenty
ganja farmer
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Registered: 05/14/11
Posts: 729
Loc: zion
Re: Brown/yellowish spots on leaves, first DWC [Re: charlymanson]
    #628553 - 06/20/12 06:39 AM (4 years, 5 months ago)

ph should really be in the range of 5.5-6.0


--------------------
it's written right here.
it's absolutely clear.
the ganja herb is the healing of the nation.


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OfflinePilze
Funky Monk


Registered: 10/11/09
Posts: 770
Last seen: 3 years, 5 months
Re: Brown/yellowish spots on leaves, first DWC [Re: brainsOplenty]
    #628568 - 06/20/12 10:28 AM (4 years, 5 months ago)

5.5 is the sweet spot for me :smile:


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Offlineviper33802


Registered: 04/04/12
Posts: 142
Last seen: 4 years, 11 days
Re: Brown/yellowish spots on leaves, first DWC [Re: Pilze]
    #628636 - 06/20/12 07:37 PM (4 years, 5 months ago)

how much nutes have you been using?


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Offlinecharlymanson
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Registered: 04/25/12
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Loc: Canada Flag
Last seen: 2 years, 5 days
Re: Brown/yellowish spots on leaves, first DWC [Re: viper33802]
    #628706 - 06/21/12 08:51 AM (4 years, 5 months ago)

full strength
56 ml micro and 112 ml bloom - 7 gallon res sorry not 9


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InvisiblebrainsOplenty
ganja farmer
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Registered: 05/14/11
Posts: 729
Loc: zion
Re: Brown/yellowish spots on leaves, first DWC [Re: charlymanson]
    #628780 - 06/21/12 06:18 PM (4 years, 5 months ago)

6 inches tall at 34 days.
and ph is 6 to 7ish.
i'm thinking your problem is ph.
those plants should be more than twice that size.


--------------------
it's written right here.
it's absolutely clear.
the ganja herb is the healing of the nation.


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InvisiblebrainsOplenty
ganja farmer
Male User Gallery


Registered: 05/14/11
Posts: 729
Loc: zion
Re: Brown/yellowish spots on leaves, first DWC [Re: charlymanson]
    #628781 - 06/21/12 06:20 PM (4 years, 5 months ago)

what type of water are you using?
tap, distilled, filtered,well, reverse osmosis?


--------------------
it's written right here.
it's absolutely clear.
the ganja herb is the healing of the nation.


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InvisibleHawksresurrection
 User Gallery


Registered: 12/05/08
Posts: 13,294
Trusted Cultivator
Re: Brown/yellowish spots on leaves, first DWC [Re: brainsOplenty]
    #628790 - 06/21/12 09:42 PM (4 years, 5 months ago)

It's hands down his pH.


--------------------
Dude she isn't as young as she use to be.

-niteowl


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Offlinecharlymanson
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Registered: 04/25/12
Posts: 46
Loc: Canada Flag
Last seen: 2 years, 5 days
Re: Brown/yellowish spots on leaves, first DWC [Re: Hawksresurrection]
    #629169 - 06/24/12 07:32 AM (4 years, 5 months ago)

Its looking a lot better I think, the roots were a little discolored brownish and so I went out to get hydrozyme, seems to make the roots a lot whiter. I also fixed the ph, is it fine to cut the dead/burnt part of the leaves if its at the tips? Alittle too late to ask but I have done so.

This is another that seems to be doing well with no problems in the same res.

I also have an ugly autoflower lol, I hope it turns out alright.


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Offlineviper33802


Registered: 04/04/12
Posts: 142
Last seen: 4 years, 11 days
Re: Brown/yellowish spots on leaves, first DWC [Re: charlymanson]
    #629313 - 06/25/12 11:19 AM (4 years, 5 months ago)

you may also want to cover that container with mylar or panda film to keep the light out. That may have been why the roots began to get some color. Just a thought


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Offlinecharlymanson
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Registered: 04/25/12
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Last seen: 2 years, 5 days
Re: Brown/yellowish spots on leaves, first DWC [Re: viper33802]
    #630110 - 07/01/12 10:50 PM (4 years, 5 months ago)

Ah yes I figured that, I may have waited to long to do so though because the plants have gotten alittle big now.

Heres an update pic:


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