Magnesium Deficiency? - GreenPassion.org - Dedicated to Medicinal Cannabis Cultivation and Education

Hobo · #1 (**permalink**) 05-10-2008, 05:31 PM

Im pretty sure thats whats going on here, a magnesium deficiency. It doesnt make sense why it would only be happening to some of my plants... perhaps the media in some of the basins has too much built up salts and this is some sort of toxicity of something... what do you think?

#2 (**permalink**) 05-10-2008, 05:39 PM

looks like mag or ozone damage..you use an ozone generator near them plants....also what madia are you using..i know coco will rob the plants of cal mag in some instances...peace az

green_nobody · #3 (**permalink**) 05-10-2008, 06:01 PM

build up of Mg, mist with light Epsom salt mix and leach the soil following ISO's leaching tutorial.

IceIceBaBy · #4 (**permalink**) 05-10-2008, 06:09 PM

if it is a mag deficiency just add some calmag (1/2 dose of what the bottle says...stuff jacks up your ppm)

Hobo · #5 (**permalink**) 05-10-2008, 06:32 PM

i have gravel for my media, i suppose i just need to run some straight water through them and compensate for nutes later after it returns back to the reservoir

Quote:

Originally Posted by green_nobody

build up of Mg, mist with light Epsom salt mix and leach the soil following ISO's leaching tutorial.

IceIceBaBy · #6 (**permalink**) 05-10-2008, 06:35 PM

just take your tray full of plants and put them in your tub...use your shower head and give them a good flushing. sometimes i have noticed my expanded clay turn white in area's and this is when i know i need to run water through them to clean out the salts. if you let it go for too long it can have a pretty bad effect.

Hobo · #7 (**permalink**) 05-10-2008, 06:41 PM

the unit is completely stationary, each one of the basins weighs a good 60 pounds, and its carefully rigged up to the reservoir which would be a pain to disconnect.

Quote:

Originally Posted by IceIceBaBy

just take your tray full of plants and put them in your tub...use your shower head and give them a good flushing. sometimes i have noticed my expanded clay turn white in area's and this is when i know i need to run water through them to clean out the salts. if you let it go for too long it can have a pretty bad effect.

IceIceBaBy · #8 (**permalink**) 05-10-2008, 06:58 PM

ahhh that could be an issue than...whats your plan? just pour pitcher after pitcher of fresh pH'ed water in through the tops of your pots?

green_nobody · #9 (**permalink**) 05-10-2008, 07:24 PM

what a pain! but hey, maybe this is a total lack of Mg in your fertilizer due some weired charge or something similar - but don't you have all those in one unit then?

Hobo · #10 (**permalink**) 05-11-2008, 01:05 AM

i added a couple teaspoons of Epsom salt to the reservoir, ill see if this balances out the issue.

Hobo · #11 (**permalink**) 05-11-2008, 01:06 AM

exactly

Quote:

Originally Posted by IceIceBaBy

ahhh that could be an issue than...whats your plan? just pour pitcher after pitcher of fresh pH'ed water in through the tops of your pots?

LoM · #12 (**permalink**) 11-12-2008, 11:00 PM

Im going through the same issues, it looks identical.
Lucky though it didn't seem to effect my crop.

Since it came on during mid flowering,
I just added 2.5ML of epsom salts to every L
of water and water them/fert.

I beleive it was lock up due to how cold there growing area
was. I since have bought a grow tent, and temps are very fine.

<EDIT> Oh and the Buds are doing dandy<EDIT>
LoM