is this magnesium deficiency?

Oski · #1 (**permalink**) 02-15-2007, 10:45 PM

hi

ive got a plant where most of the leaves look like the one in the picture... is it mag def or something else?

thanks

chimera · #2 (**permalink**) 02-16-2007, 12:33 AM

Quote:

Originally Posted by Oski

hi

ive got a plant where most of the leaves look like the one in the picture... is it mag def or something else?

thanks

Purple stems? more like potassium def. but it is really to hard to tell with a single leaf, post pict of whole plant.

Ganja Guerrilla · #3 (**permalink**) 02-16-2007, 02:05 AM

I think its potassium aswell what are your NPK values in your ferts, & how often are you feeding them

Oski · #4 (**permalink**) 02-16-2007, 06:01 AM

as im using canna aqua, ive increased the ec to 1.9 now, as its a fert high in potassium (im told).

ive also foliar sprayed with epsom salts.

see how the goes.

cheers

Oski · #5 (**permalink**) 02-16-2007, 06:05 PM

hi

heres what the plant look like today - it was foliar sprayed thoroughly with epsom salts yesterday and the ec of the res was raised to 1.9.

they were only transferred to bubblers 5 days ago, they looked pretty much the same then. they were in 100% perlite before the transfer

any input would be appreciated.

thanks

Oski · #6 (**permalink**) 02-16-2007, 06:09 PM

and amother

Oski · #7 (**permalink**) 02-16-2007, 06:17 PM

i should also add, until yesterday, the res level was about 2" into the net pots until i lowered it to about 2" below the net pot.

so could overwatering be a factor?

thanks

Oski · #8 (**permalink**) 02-16-2007, 06:19 PM

oh and just one more thing LOL, i increased the number of pumps to 4 x 150L p/h dual outlet and 10 airstones yesterday to make sure the res was REALLY being SUPER oxygenated.. over kill perhaps....

Ganja Guerrilla · #9 (**permalink**) 02-16-2007, 09:20 PM

I dont do hydro, however after seeing the whole plant, there is a definite potassium deficency but I see other issues , & possible lockout,

whats your CURRENT PH...... I believe adding another airstone can raise the PH

Oski · #10 (**permalink**) 02-16-2007, 10:49 PM

thanks for your help GG, ive raised the nute level to 1.9 so hopefully that will resolve the deficiency and the ph is 6.0.

im thinking the deficiency has been caused by overwatering, altho i dont know that for sure.

frog-godbee · #11 (**permalink**) 02-27-2007, 05:12 AM

Air stones can definately effect the ph level .... depends on the air its sucking in obviously .... but that was an excellent point ganja

chimera · #12 (**permalink**) 02-27-2007, 08:19 AM

Oski, the pH is a bit high, sould be between 5.5 and 5.8. I personally like extra airstones, my bubler has 6 8" airstones in it and my plants love it. But yeah, your likely going to have to adjust your pH more often.

P.S. Frog, I'm still waiting to here why your so pissed at me?

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#3 (permalink) 02-16-2007, 02:05 AM
Ganja Guerrilla www.ganjaguerrilla.net Join Date: Jul 2006 Posts: 2,822	I think its potassium aswell what are your NPK values in your ferts, & how often are you feeding them

#4 (permalink) 02-16-2007, 06:01 AM
Oski Registered User Join Date: Jan 2007 Posts: 15	as im using canna aqua, ive increased the ec to 1.9 now, as its a fert high in potassium (im told). ive also foliar sprayed with epsom salts. see how the goes. cheers

#7 (permalink) 02-16-2007, 06:17 PM
Oski Registered User Join Date: Jan 2007 Posts: 15	i should also add, until yesterday, the res level was about 2" into the net pots until i lowered it to about 2" below the net pot. so could overwatering be a factor? thanks

#8 (permalink) 02-16-2007, 06:19 PM
Oski Registered User Join Date: Jan 2007 Posts: 15	oh and just one more thing LOL, i increased the number of pumps to 4 x 150L p/h dual outlet and 10 airstones yesterday to make sure the res was REALLY being SUPER oxygenated.. over kill perhaps....

#9 (permalink) 02-16-2007, 09:20 PM
Ganja Guerrilla www.ganjaguerrilla.net Join Date: Jul 2006 Posts: 2,822	I dont do hydro, however after seeing the whole plant, there is a definite potassium deficency but I see other issues , & possible lockout, whats your CURRENT PH...... I believe adding another airstone can raise the PH

#10 (permalink) 02-16-2007, 10:49 PM
Oski Registered User Join Date: Jan 2007 Posts: 15	thanks for your help GG, ive raised the nute level to 1.9 so hopefully that will resolve the deficiency and the ph is 6.0. im thinking the deficiency has been caused by overwatering, altho i dont know that for sure.

#11 (permalink) 02-27-2007, 05:12 AM
frog-godbee Pot User Join Date: Feb 2007 Location: Australia Posts: 191	Air stones can definately effect the ph level .... depends on the air its sucking in obviously .... but that was an excellent point ganja

#12 (permalink) 02-27-2007, 08:19 AM
chimera Registered User Join Date: May 2006 Posts: 2,347	Oski, the pH is a bit high, sould be between 5.5 and 5.8. I personally like extra airstones, my bubler has 6 8" airstones in it and my plants love it. But yeah, your likely going to have to adjust your pH more often. P.S. Frog, I'm still waiting to here why your so pissed at me?

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