Quick question about possible magnesium deficiency

connachtspawn · #1 (**permalink**) 01-09-2007, 03:42 AM

Semi- new to this, my second round, soil. Based on this thread http://forum.grasscity.com/sick-plan...e-healthy.html
and other research, I'm pretty sure I have a slight magnesium deficiency, which I understand can be helped by misting with epsom salt dissolved in water. My question may seem simple, but I really want to cover all my bases: if the plant *doesn't* have a magnesium deficiency and i spray it with the salt mix, could that cause damage?

Here are some photos to help. The situation is the same as the thread above- curling only on one stem, the rest of the plant is very healthy and there's no real discoloration.

SmknVTEC · #2 (**permalink**) 01-09-2007, 08:04 AM

Hey man.

Your problem is not magnesium it is heat. How hot does it get in the grow room? Yes, it is possible to give a plant magnesium toxicity.

connachtspawn · #3 (**permalink**) 01-09-2007, 08:44 AM

Well, I'd certainly hate to poison it; glad I asked! I only let it get to about 75°. Too close to the lamp maybe? I maintain air flow between the lamp and the leaves... and none of the other leaves look like those.

Thanks for the response.

SmknVTEC · #4 (**permalink**) 01-10-2007, 12:36 AM

You can go ahead and foliar spray or just water it with 1/4-1/2 TSP of Epsom salt per gallon of water and give it once. If it does not get better, something is too hot. If it gets better it was magnesium.

chimera · #5 (**permalink**) 01-10-2007, 02:47 AM

It also, could be a combo of heat and humdity or lack there of. Try just folair feeding(spraying) it with plain water first. I really don't think its mag def.

connachtspawn · #6 (**permalink**) 01-10-2007, 05:31 AM

Wow, i'm really glad i asked... thanks for the help!

SmknVTEC · #7 (**permalink**) 01-10-2007, 07:39 AM

Quote:

Originally Posted by chimera

I really don't think its mag def.

I agree.
I don't think 1/2 of Epsom will hurt though. What is the humidity in the room?

connachtspawn · #8 (**permalink**) 01-10-2007, 12:11 PM

Humidity level? Honestly, I have no idea. I have no way of measuring it available to me at present. I'm trying the foliar feeding- just water right now.

witchdr420 · #9 (**permalink**) 01-10-2007, 03:24 PM

Wal-Mart has thermometer-hygrometer with min/max memory for around six or seven dollars US. Dropped one of mine in the water, dried out and the thing still works.

connachtspawn · #10 (**permalink**) 01-10-2007, 09:03 PM

Thanks, i'll definitely look into it. The foliar feeding seems to be helping.

SmknVTEC · #11 (**permalink**) 01-10-2007, 10:46 PM

Good.

Just don't spray the lights.

connachtspawn · #12 (**permalink**) 01-11-2007, 09:33 AM

Got it covered. Literally.

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#1 (permalink) 01-09-2007, 03:42 AM
connachtspawn Registered User Join Date: Jan 2007 Posts: 13	Quick question about possible magnesium deficiency Semi- new to this, my second round, soil. Based on this thread http://forum.grasscity.com/sick-plan...e-healthy.html and other research, I'm pretty sure I have a slight magnesium deficiency, which I understand can be helped by misting with epsom salt dissolved in water. My question may seem simple, but I really want to cover all my bases: if the plant doesn't have a magnesium deficiency and i spray it with the salt mix, could that cause damage? Here are some photos to help. The situation is the same as the thread above- curling only on one stem, the rest of the plant is very healthy and there's no real discoloration.

#2 (permalink) 01-09-2007, 08:04 AM
SmknVTEC Moderator Extraordinaire Join Date: May 2003 Location: Tornado Alley Posts: 8,084	Hey man. Your problem is not magnesium it is heat. How hot does it get in the grow room? Yes, it is possible to give a plant magnesium toxicity. __________________ "I build cars for young men that only old men can afford"- Enzo Ferrari (1898-1988) LED Thread PGAMG Thread MG vs. Generic Soil Current and Legit Seedbanks GC Forum Rules

#3 (permalink) 01-09-2007, 08:44 AM
connachtspawn Registered User Join Date: Jan 2007 Posts: 13	Well, I'd certainly hate to poison it; glad I asked! I only let it get to about 75°. Too close to the lamp maybe? I maintain air flow between the lamp and the leaves... and none of the other leaves look like those. Thanks for the response.

#4 (permalink) 01-10-2007, 12:36 AM
SmknVTEC Moderator Extraordinaire Join Date: May 2003 Location: Tornado Alley Posts: 8,084	You can go ahead and foliar spray or just water it with 1/4-1/2 TSP of Epsom salt per gallon of water and give it once. If it does not get better, something is too hot. If it gets better it was magnesium. __________________ "I build cars for young men that only old men can afford"- Enzo Ferrari (1898-1988) LED Thread PGAMG Thread MG vs. Generic Soil Current and Legit Seedbanks GC Forum Rules

#5 (permalink) 01-10-2007, 02:47 AM
chimera Registered User Join Date: May 2006 Posts: 2,347	It also, could be a combo of heat and humdity or lack there of. Try just folair feeding(spraying) it with plain water first. I really don't think its mag def.

#6 (permalink) 01-10-2007, 05:31 AM
connachtspawn Registered User Join Date: Jan 2007 Posts: 13	Wow, i'm really glad i asked... thanks for the help!

#8 (permalink) 01-10-2007, 12:11 PM
connachtspawn Registered User Join Date: Jan 2007 Posts: 13	Humidity level? Honestly, I have no idea. I have no way of measuring it available to me at present. I'm trying the foliar feeding- just water right now.

#9 (permalink) 01-10-2007, 03:24 PM
witchdr420 Old School Join Date: Dec 2006 Posts: 47	Wal-Mart Wal-Mart has thermometer-hygrometer with min/max memory for around six or seven dollars US. Dropped one of mine in the water, dried out and the thing still works. __________________ Don't bogart that joint, my friend.

#10 (permalink) 01-10-2007, 09:03 PM
connachtspawn Registered User Join Date: Jan 2007 Posts: 13	Thanks, i'll definitely look into it. The foliar feeding seems to be helping.

#11 (permalink) 01-10-2007, 10:46 PM
SmknVTEC Moderator Extraordinaire Join Date: May 2003 Location: Tornado Alley Posts: 8,084	Good. Just don't spray the lights. __________________ "I build cars for young men that only old men can afford"- Enzo Ferrari (1898-1988) LED Thread PGAMG Thread MG vs. Generic Soil Current and Legit Seedbanks GC Forum Rules

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

#12 (permalink) 01-11-2007, 09:33 AM
connachtspawn Registered User Join Date: Jan 2007 Posts: 13	Got it covered. Literally.