MG def? Low PH? - Cannabis Infirmary - International Cannagraphic Magazine Forums

02-06-2006, 03:38 AM

I know this is small def, but I want to fix it asap so it doesent get any less-greener!

What do you guys think?

There should be planty of nutes in the soil..I have quality soil with biosuper mix from plagron 5%.. that should do! I really suspect low ph and locking out Mg and shit...

Peace and love,
Agnes

02-06-2006, 04:48 AM

I think you're right to suspect low pH first. Be sure your meter is calibrated and your calibration solution is fresh.

Verite · 02-06-2006, 09:45 PM

Curious if that chart is for soil or soiless? Also what is " too low "?

02-06-2006, 09:53 PM

I am right there with you Agnes on the low PH. I had the prob with my Morning stars. I think I have it remedied now though. I raised the PH in my water from 6.5 top 7.0 and that fixed it.

GCG

02-07-2006, 12:09 AM

Quote:

Originally Posted by garlic city gro

I am right there with you Agnes on the low PH. I had the prob with my Morning stars. I think I have it remedied now though. I raised the PH in my water from 6.5 top 7.0 and that fixed it.

GCG

I got PH meter today from a friend but it's not calibrated and soil ph mesuring is really fucked up... I have to rais pH slowly without mesuring ph.. i have a working PPM meter tho... what can I do!?

Please help...

Peace and love,
Agnes

02-07-2006, 01:52 AM

Oh and another question for smart ppl

When the PH is falling, what element will be locked first?

Peace and love,
Agnes

02-07-2006, 04:28 AM

I believe that chart is for soil. Any pH above 6.3 and below 7.0 or so shouldn't be a problem with most varieties of cannabis. In soil, phosphorous and magnesium are first to be locked out as pH falls, but the symptoms of phos. def. aren't nearly as obvious as those of mag. deficiency, so you usually notice mag. symptoms first, IME.

If you aren't able to test the pH of your water/runoff, I would recommend buying a few gallons of distilled water and flushing lightly with that. The pH of distilled should be *near* 7.0 somewhere.

02-07-2006, 11:09 PM

Agnes you need to go to a grow store and get some clibration solution and calibrate your PH meter. If that is not possible go to a pool supply store or hardware store and buy a cheap PH test kit for pools.

Instead of buying distilled water for the same money you can buy RO water. It is much cleaner.

Iam no expert ,but those are my 2 cents
GCG

02-08-2006, 12:28 AM

Is there anything else you can use for mg def, I am lazy and don't wanna go to the store for epsom salt...whats the diff between it and table salt? I know you don't EAT epsom salt but just curious. My new growth has some tiny rusty spots.

Verite · 02-08-2006, 08:40 PM

I once shouted loudly for magnesium from the sanctity of my toilet but found it wasnt much help either. I eventually had to go someplace and get it as opposed to feeding my plants cooked spinach.

02-06-2006, 03:38 AM	#1
Guest Guest Posts: n/a	MG def? Low PH? I know this is small def, but I want to fix it asap so it doesent get any less-greener! What do you guys think? There should be planty of nutes in the soil..I have quality soil with biosuper mix from plagron 5%.. that should do! I really suspect low ph and locking out Mg and shit... Peace and love, Agnes
	Quote

02-06-2006, 09:45 PM	#3
Verite My little pony.. my little pony Join Date: Jul 2005 Posts: 4,750	Curious if that chart is for soil or soiless? Also what is " too low "? __________________ Strains by Verite .......................... Holy Grail Intro, Seeds at Seebay, Private Breeders Orange Diesel Intro, Seeds now at Seedbay
	Quote

02-08-2006, 08:40 PM	#10
Verite My little pony.. my little pony Join Date: Jul 2005 Posts: 4,750	I once shouted loudly for magnesium from the sanctity of my toilet but found it wasnt much help either. I eventually had to go someplace and get it as opposed to feeding my plants cooked spinach. __________________ Strains by Verite .......................... Holy Grail Intro, Seeds at Seebay, Private Breeders Orange Diesel Intro, Seeds now at Seedbay
	Quote

02-06-2006, 04:48 AM	#2
Guest Guest Posts: n/a	I think you're right to suspect low pH first. Be sure your meter is calibrated and your calibration solution is fresh.
	Quote

02-06-2006, 09:53 PM	#4
Guest Guest Posts: n/a	I am right there with you Agnes on the low PH. I had the prob with my Morning stars. I think I have it remedied now though. I raised the PH in my water from 6.5 top 7.0 and that fixed it. GCG
	Quote

02-07-2006, 01:52 AM	#6
Guest Guest Posts: n/a	Oh and another question for smart ppl When the PH is falling, what element will be locked first? Peace and love, Agnes
	Quote

02-07-2006, 04:28 AM	#7
Guest Guest Posts: n/a	I believe that chart is for soil. Any pH above 6.3 and below 7.0 or so shouldn't be a problem with most varieties of cannabis. In soil, phosphorous and magnesium are first to be locked out as pH falls, but the symptoms of phos. def. aren't nearly as obvious as those of mag. deficiency, so you usually notice mag. symptoms first, IME. If you aren't able to test the pH of your water/runoff, I would recommend buying a few gallons of distilled water and flushing lightly with that. The pH of distilled should be near 7.0 somewhere.
	Quote

02-07-2006, 11:09 PM	#8
Guest Guest Posts: n/a	Agnes you need to go to a grow store and get some clibration solution and calibrate your PH meter. If that is not possible go to a pool supply store or hardware store and buy a cheap PH test kit for pools. Instead of buying distilled water for the same money you can buy RO water. It is much cleaner. Iam no expert ,but those are my 2 cents GCG
	Quote

02-08-2006, 12:28 AM	#9
Guest Guest Posts: n/a	Is there anything else you can use for mg def, I am lazy and don't wanna go to the store for epsom salt...whats the diff between it and table salt? I know you don't EAT epsom salt but just curious. My new growth has some tiny rusty spots.
	Quote