half yellow leaf

mr weed · #1 (**permalink**) 08-04-2007, 10:06 PM

hi g city
my plant the top leaf ,half turn yellow dont know how, can anyone hlep ? my growroom is 2 x 6 x 12 in the closet with 1000 watt hps 430 cfn inline fan , aircooling hood plus a lot of fan the temp is 85 when light on .thanks g city

Ganja Guerrilla · #2 (**permalink**) 08-04-2007, 10:15 PM

looks like lite bleaching, nitrogen def doesnt show on 1/2 a leaf blade
your air cooled hood is making you a little too comfortable.... there are a couple leaves showing signs of heat stress as well.........try raising your lites about 10"

Id also like to see picks with the HPS lites off so I can actually see the plants color please

mr weed · #3 (**permalink**) 08-04-2007, 10:33 PM

thnks ganja will raising 10 inch . post a pic w/ out hps light on

urgr8estfear · #4 (**permalink**) 08-04-2007, 11:45 PM

The pictures with the bi-colored leave really amazes me!
No way that external factors alone could produce such a leave.
Frankenweed!

mr weed · #5 (**permalink**) 08-05-2007, 07:57 AM

Quote:

Originally Posted by Ganja Guerrilla

looks like lite bleaching, nitrogen def doesnt show on 1/2 a leaf blade
your air cooled hood is making you a little too comfortable.... there are a couple leaves showing signs of heat stress as well.........try raising your lites about 10"

Id also like to see picks with the HPS lites off so I can actually see the plants color please

hey u all please look a this

Ganja Guerrilla · #6 (**permalink**) 08-05-2007, 08:17 AM

yep you have issues, we will get it sorted out

To rule out PH related issues complete a soil runoff PH test.......
with PH corrected water (6.5-6.8PH ) pour enough water in the pots so the water runs out the bottom of the pot ...test the PH of this water....

If the PH reading is out of optimum range 6.5-6.8 PH, you need to flush your plant.
Flush with PH corrected water, till in optimum PH range, 3 times the volume of the pots rule of thumb but may require much more flushing if the rootball is thick & sour
EG: 1 gal pot = 3 gal. flush
add 1/2 strength nutes to the last gallon of the flush.

you need PH test equipment, chemical PH test or digital PH meter also PHup & Down Correcting Solutions....for emergency you can use vinegar to go down and baking soda to correct up.... get your water in the optimum range 6.5- 6.8 pH for flushing, watering & ferts solutions

mr weed · #7 (**permalink**) 08-05-2007, 10:22 PM

thanks ganja will keep you post

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#2 (permalink) 08-04-2007, 10:15 PM
Ganja Guerrilla www.ganjaguerrilla.net Join Date: Jul 2006 Posts: 2,822	looks like lite bleaching, nitrogen def doesnt show on 1/2 a leaf blade your air cooled hood is making you a little too comfortable.... there are a couple leaves showing signs of heat stress as well.........try raising your lites about 10" Id also like to see picks with the HPS lites off so I can actually see the plants color please __________________ Diagnose your own plants...Visit my site www.ganjaguerrilla.net

#3 (permalink) 08-04-2007, 10:33 PM
mr weed Registered User Join Date: Jul 2007 Posts: 41	thnks ganja will raising 10 inch . post a pic w/ out hps light on

#4 (permalink) 08-04-2007, 11:45 PM
urgr8estfear Abyssal frequent flyer Join Date: Mar 2006 Location: The netherworld....uhmm..lands Posts: 2,100	The pictures with the bi-colored leave really amazes me! No way that external factors alone could produce such a leave. Frankenweed! __________________ Check out my crazy fluro/HPS grows : http://forum.grasscity.com/general-indoor-growing/91096-needs-professional-assistance-flowering.html& http://forum.grasscity.com/grow-journals/102259-urgr8estfear-2nd-fluro-only-soil-grow-start-finish.html& http://forum.grasscity.com/grow-jour...soil-grow.html& http://forum.grasscity.com/grow-jour...-hps-grow.html http://forum.grasscity.com/grow-jour...ml#post2098623 http://forum.grasscity.com/grow-jour...own-seeds.html

#6 (permalink) 08-05-2007, 08:17 AM
Ganja Guerrilla www.ganjaguerrilla.net Join Date: Jul 2006 Posts: 2,822	yep you have issues, we will get it sorted out To rule out PH related issues complete a soil runoff PH test....... with PH corrected water (6.5-6.8PH ) pour enough water in the pots so the water runs out the bottom of the pot ...test the PH of this water.... If the PH reading is out of optimum range 6.5-6.8 PH, you need to flush your plant. Flush with PH corrected water, till in optimum PH range, 3 times the volume of the pots rule of thumb but may require much more flushing if the rootball is thick & sour EG: 1 gal pot = 3 gal. flush add 1/2 strength nutes to the last gallon of the flush. you need PH test equipment, chemical PH test or digital PH meter also PHup & Down Correcting Solutions....for emergency you can use vinegar to go down and baking soda to correct up.... get your water in the optimum range 6.5- 6.8 pH for flushing, watering & ferts solutions __________________ Diagnose your own plants...Visit my site www.ganjaguerrilla.net

#7 (permalink) 08-05-2007, 10:22 PM
mr weed Registered User Join Date: Jul 2007 Posts: 41	thanks ganja will keep you post

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