OMG! is this Phosphorus deff ?

[StonedGrunt55]

Hi evryone, i'm having a today, i checked my 3 babes & found this on the lower leaves. The lower leaves turned light green & starting to dry from the edges .

This is my 2nd grow but its the 1st time i'm seeing this, I got 3 chronic girls in a 3 x 3ft x 6ft high growcab & they'r 33 days flowering today 94 days from sprout. They had 45 days veg & been 49days 12/12.They'r under a 400w MH 13inches away & i feed them tapwater 24 hours after i fill the bucket (to eliminate any bacteria) & with adjusted ph around 6.5. Ferts i used 'Miracle grow all purpose plant food' 24-8-16 for veg & i'm using 'Phostrogen' 14-10-27 for flowering, always starting from 25% strenght & work my way onwards. Organic Soil i use 'Flortis ter Multipurpose Substratium' made from Northern European natural raw materials that contains a high percentage of peat especially black, perlite & added some building sand myself. I added the top inch with 'Fish blood & bone' & water them evry 3 days . fan & AC coz i had a little heatstress b4 but temps now from 78-79 to 83f.They'r fro 22-26 inches tall..
Yesterday i ferted them 95% phostrogen & a pinch of Miracle grow but i think it came too hard so this morning when i saw this i flushed them immediatly. I tried this before on last fert but at that time i gave them 50%phostrogen & 50%Miracle grow & it was 50-75% strenght. I'v been seeing redstems & lower leaves light green lately. I even noticed that the new leaves stay small not like the fanleaves & a little slow growth...
i'v been reading some guides But i'm getting confused, i think its (p) deff but not sure
Can someone please tell me what i should do????
i just flushed it.. should i fert again but with a less dose???

 

[Core]

hia Stoned Grunt..buddy do you know the soils ph...thats verry important....its not coz you ph your water to 6.5 that the soils ph is 6.5...i've seen this mistake before....but dont take runoff that is't accurate ime
but it looks like P damage..
ohw and how many leaves are affected...i see a little Mg damage on the leaves 2 ...these can be older or new ...it seems like older...

but here's a pic you can look at yourself.....klutter posted this up ...i use the book 2 btw....

 

[Guest]

hia Stoned Grunt..buddy do you know the soils ph...thats verry important....its not coz you ph your water to 6.5 that the soils ph is 6.5...i've seen this mistake before....but dont take runoff that is't accurate ime
but it looks like P damage..
ohw and how many leaves are affected...i see a little Mg damage on the leaves 2 ...these can be older or new ...it seems like older...

but here's a pic you can look at yourself.....klutter posted this up ...i use the book 2 btw....

Awesome post Core, Got any more like that? Say for Magnesium def. id?

 

[DrKatz420]

I'm pretty sure that 14-10-27 for flowering will guarantee a P deficiency, since you want your P higher than your N (and it also seems like a high N/K ratio for anything past the first few weeks of flowering). If you can track down some Pure Blend bloom formula, I'm pretty sure that will take care of it for you.

 

[Core]

yea i put it up for ya uh what...

 

[HerbGlaze]

Well how close is your light to the plant? Could be the light is to close?

 

[StonedGrunt55]

hia Stoned Grunt..buddy do you know the soils ph...thats verry important....its not coz you ph your water to 6.5 that the soils ph is 6.5...i've seen this mistakes before....but dont take runoff that is't accurate ime
but it looks like P damage..
ohw and how many leaves are affected...i see a little Mg damage on the leaves 2 ...these can be older or new ...it seems like older...

but here's a pic you can look at yourself.....klutter posted this up ...i use the book 2 btw....

hi core, things r getting complicated to me.. i just baught a soil ph tester coz last i measured the soil ph was from RUNOFF.. it seems i was making mistakes more than i thaught...
IT COULD BE ph imbalance coz i use a color ph tester (for watering)& doesn't come that accurate all the time, but it comes around 6.2-3 to 6.5
leaves affected just a few of the lowest leaves... a very little on the older & more on the new leaves... I just mesured the soil ph :jawdrop: i'm getting a saying this, it came around 7.5 - 8.0 JESUS CHRIST!! does that mean i should water them around 5.0 ???
Tnkx a whole damn lot for the help/info bro!!!! u just saved my ass...

 

[StonedGrunt55]

I'm pretty sure that 14-10-27 for flowering will guarantee a P deficiency, since you want your P higher than your N (and it also seems like a high N/K ratio for anything past the first few weeks of flowering). If you can track down some Pure Blend bloom formula, I'm pretty sure that will take care of it for you.

Yeah thats the best i could get around here.. I got 2 other ferts (never used them coz they'r ceap) the veg is 18-18-18 & the flowering one is 20-5-30, apart from the Miracle grow 24-8-16 & this Phostrogen 14-10-27. If its that case i'll go look for it out of town & to tell u the truth you'r not the first one that told me 14-10-27 is not a good one but it seems no one grows pot around here coz the things i asked for aren't here .

Anyway tnkx for the help dude, i'll take your advice on top priority...


hi there Herbglaze , i don't think its the light coz its 13 inches away & not the top leaves but the lowest leaves r affected... from what i just found out i got alkaline soil ,ph imbalance & wrong fert i'm using.
Tnkx anyway for your comment!

 

[StonedGrunt55]

From those pages i think i got both (p) & (mg) too...

 

[Core]

heya Grunt ...dont go flippin now...how did you take soils ph if i may ask...?distilled water with a little soil in is the way 2 go 2 have accurate...hope that soil meter is't a cheap thingy with a iron bar pointing down....those are crap btw......

and NEVER,...but Never give them water/flush outside the ph safety zone 2 lower ph...i would recommend not going below 6.0 ph 2 try and lower the ph....

BTW didt you flush already???..dont 2 it twice man...

and yea ..maybe you should go a little out of your way 2 buy some better nutes...those are not good NPK ratios at all...

 

[StonedGrunt55]

heya Grunt ...dont go flippin now...how did you take soils ph if i may ask...?distilled water with a little soil in is the way 2 go 2 have accurate...hope that soil meter is't a cheap thingy with a iron bar pointing down....those are crap btw......

and NEVER,...but Never give them water/flush outside the ph safety zone 2 lower ph...i would recommend not going below 6.0 ph 2 try and lower the ph....

BTW didt you flush already???..dont 2 it twice man...

and yea ..maybe you should go a little out of your way 2 buy some better nutes...those are not good NPK ratios at all...

YES WITH IRON BAR POINTING DOWN its all i could find here (in town) lol seems i gotta make a new shopping list & yes i flushed it yesterday. I'll deffinatly take your advice distilled water soil test but how much ammount of soil/water should i use? just grab a handful???
LOL i was waiting for a reply before i started lowering ph.. so u recommend i'll lower it 6.0 ok then i'll do that... but i think i gotta wait a few days till soil dries coz they'r already alil droppy from yesterdays flush...
tnkx for the help!

 

[Core]

lol sorry man thought so ...those are crap bro....ditch it

mmmmh a tbspoon would be enough...and the same amount of distilled water would do the trick ..Let i sit for 5 minutes and test it with ya ph meter....that should be accurate....and yea just wait 2 flush again...first be shure what your soils ph is..Maybe you fixed the problem already...

 

[StonedGrunt55]

lol sorry man thought so ...those are crap bro....ditch it

mmmmh a tbspoon would be enough...and the same amount of distilled water would do the trick ..Let i sit for 5 minutes and test it with ya ph meter....that should be accurate....and yea just wait 2 flush again...first be shure what your soils ph is..Maybe you fixed the problem already...

damn crappy stuff.. 1st thing i'll do i go look for some good nutes ,2nd i'll mesure soil ph with distilled water & 3rd i'll flush them again when they dry adjusting correct ph to the soil's ph..
oh 1 more thing a good water ph tester.
you deserve a thousand tnkx core :friends:

 

[Guest]

yea i put it up for ya uh what...

Thanks core very good info man!

 

[Blackvelvet]

Looks more like fertilizer burn. Alot of urea/ammonia nitrogen rather than nitrate nitrogen can be toxic to plants. Check your label for type of nitrogen used.

 

[StonedGrunt55]

Looks more like fertilizer burn. Alot of urea/ammonia nitrogen rather than nitrate nitrogen can be toxic to plants. Check your label for type of nitrogen used.

Tnkx for checking dude, seems that my fert got the three of them..
ureic nitrogen..........2.5%
ammoniacal nitrogen..3.5%
nitric nitrogen...........8%

but i'm gonna try getting a better fert anyway...

 

[StonedGrunt55]

I made 'Fish Blood & Bone' tea & i sprayed them with it today & yesterday.
Should i keep spraying them daily with it????
Yesterday i noticed that some lower leaves & lower stems were WEAK easily broken . also i couldn't find any better ferts. Should i start using the one 18-18-18 +T.E(never used it). instead of the 14-10-27 ???

 

[Darkstarlive]

Core:

What Book are these pages from, it looks like great info with accurate pictures, I'd love to get that book.

Peace...

 

[Suby]

 

[Core]

hia Grunt....i have no XP what so ever with organic tea's..but i would't give them daily...

just use that miracle gro that you have..its the best of the 2 imho....
maybe you should look at Ebay for some nutes...easy and deliverd 2 ya home....

Darkstarlive ,Suby
indoor marijuana Horticulture....The indoor bible ...revised edition 2005...here some more of these uploaded by klutter

http://www.icmag.com/ic/showpost.php?p=1120755&postcount=1