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 Some of these posts are very old and might contain outdated information. You may wish to search for newer posts instead.
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 charlymanson
Disclosed
 
Registered: 04/25/12
Posts: 46
Loc: Canada 
Last seen: 3 months, 6 days
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 Brown/yellowish spots on leaves, first DWC 
#628366 - 06/18/12 08:34 PM (12 years, 5 months ago) |
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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 08:52 PM)
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budgrowerwannabe
Bum fighter
Registered: 01/28/12
Posts: 3,360
Last seen: 3 years, 15 days
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Re: Brown/yellowish spots on leaves, first DWC [Re: charlymanson]
#628379 - 06/18/12 11:08 PM (12 years, 5 months ago) |
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dont know if thats enough info. need to narrow it down a little
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Pilze
Funky Monk
Registered: 10/11/09
Posts: 770
Last seen: 11 years, 5 months
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Re: Brown/yellowish spots on leaves, first DWC [Re: charlymanson]
#628380 - 06/19/12 12:01 AM (12 years, 5 months ago) |
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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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viper33802
Registered: 04/04/12
Posts: 142
Last seen: 12 years, 24 days
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Re: Brown/yellowish spots on leaves, first DWC [Re: Pilze]
#628397 - 06/19/12 05:40 AM (12 years, 5 months ago) |
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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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 brainsOplenty
ganja farmer
Registered: 05/14/11
Posts: 769
Loc: zion
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Re: Brown/yellowish spots on leaves, first DWC [Re: viper33802]
#628462 - 06/19/12 03:54 PM (12 years, 5 months ago) |
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--------------------
it's written right here.
it's absolutely clear.
the ganja herb is the healing of the nation.
 
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brainsOplenty
ganja farmer
Registered: 05/14/11
Posts: 769
Loc: zion
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Re: Brown/yellowish spots on leaves, first DWC [Re: brainsOplenty]
#628463 - 06/19/12 03:56 PM (12 years, 5 months ago) |
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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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brainsOplenty
ganja farmer
Registered: 05/14/11
Posts: 769
Loc: zion
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Re: Brown/yellowish spots on leaves, first DWC [Re: brainsOplenty]
#628464 - 06/19/12 03:57 PM (12 years, 5 months ago) |
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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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charlymanson
Disclosed
Registered: 04/25/12
Posts: 46
Loc: Canada
Last seen: 3 months, 6 days
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Re: Brown/yellowish spots on leaves, first DWC [Re: brainsOplenty]
#628529 - 06/19/12 11:05 PM (12 years, 5 months ago) |
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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 (06/19/12 11:08 PM)
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brainsOplenty
ganja farmer
Registered: 05/14/11
Posts: 769
Loc: zion
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Re: Brown/yellowish spots on leaves, first DWC [Re: charlymanson]
#628553 - 06/20/12 04:39 AM (12 years, 5 months ago) |
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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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Pilze
Funky Monk
Registered: 10/11/09
Posts: 770
Last seen: 11 years, 5 months
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Re: Brown/yellowish spots on leaves, first DWC [Re: brainsOplenty]
#628568 - 06/20/12 08:28 AM (12 years, 5 months ago) |
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5.5 is the sweet spot for me 
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viper33802
Registered: 04/04/12
Posts: 142
Last seen: 12 years, 24 days
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Re: Brown/yellowish spots on leaves, first DWC [Re: Pilze]
#628636 - 06/20/12 05:37 PM (12 years, 5 months ago) |
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how much nutes have you been using?
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charlymanson
Disclosed
Registered: 04/25/12
Posts: 46
Loc: Canada
Last seen: 3 months, 6 days
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Re: Brown/yellowish spots on leaves, first DWC [Re: viper33802]
#628706 - 06/21/12 06:51 AM (12 years, 5 months ago) |
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full strength
56 ml micro and 112 ml bloom - 7 gallon res sorry not 9
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brainsOplenty
ganja farmer
Registered: 05/14/11
Posts: 769
Loc: zion
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Re: Brown/yellowish spots on leaves, first DWC [Re: charlymanson]
#628780 - 06/21/12 04:18 PM (12 years, 5 months ago) |
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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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brainsOplenty
ganja farmer
Registered: 05/14/11
Posts: 769
Loc: zion
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Re: Brown/yellowish spots on leaves, first DWC [Re: charlymanson]
#628781 - 06/21/12 04:20 PM (12 years, 5 months ago) |
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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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Hawksresurrection
Registered: 12/04/08
Posts: 13,464
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Re: Brown/yellowish spots on leaves, first DWC [Re: brainsOplenty]
#628790 - 06/21/12 07:42 PM (12 years, 5 months ago) |
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It's hands down his pH.
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Dude she isn't as young as she use to be.
-niteowl
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charlymanson
Disclosed
Registered: 04/25/12
Posts: 46
Loc: Canada
Last seen: 3 months, 6 days
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Re: Brown/yellowish spots on leaves, first DWC [Re: Hawksresurrection]
#629169 - 06/24/12 05:32 AM (12 years, 5 months ago) |
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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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viper33802
Registered: 04/04/12
Posts: 142
Last seen: 12 years, 24 days
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Re: Brown/yellowish spots on leaves, first DWC [Re: charlymanson]
#629313 - 06/25/12 09:19 AM (12 years, 5 months ago) |
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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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charlymanson
Disclosed
Registered: 04/25/12
Posts: 46
Loc: Canada
Last seen: 3 months, 6 days
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Re: Brown/yellowish spots on leaves, first DWC [Re: viper33802]
#630110 - 07/01/12 08:50 PM (12 years, 5 months ago) |
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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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