Mg?N?,or Potassium?

**astonweeda** · 06-08-12, 05:13 PM

planter 017 - Kopi.jpgI have had mulitple lockouts because of my hard water. I,and using a ph+ i think wasnt too good for the plants. I have fixed most of them now i think,getting water from elsewhere,and bought new ph+ (from ghe),and changed all the leca. The old leca was white of old salts,or something.

Wilma 4,400w HPS,leca. Shining Silver Haze about one month,but only 25 cm tall,and started developing branches just the other day. Before this it has only been the main-stem with leaves on.
Been feeding them water for four days(after changing the leca),then added half a dose of canna aqua A ,and have been feeding them that since.
planter 013 - Kopi.jpg

**LBN** · 06-08-12, 05:44 PM

if its just at the bottom i'd say N diff.

but i'm not sure...
it will give this post a bump if nothing else.

**astonweeda** · 06-08-12, 05:51 PM

Originally Posted by LBN

if its just at the bottom i'd say N diff.

but i'm not sure...
it will give this post a bump if nothing else.

It is getting its way up the plant,and the leaves start getting symptoms when they grow "big".

**LBN** · 06-08-12, 06:11 PM

Originally Posted by astonweeda

It is getting its way up the plant,and the leaves start getting symptoms when they grow "big".

i think the diff look like a few things but the N starts at the bottom and works up the older leafs first.
you could aways flush it clean and start your feeding again. dont think it would matter what one it is then.

someone else would probly no better...

**astonweeda** · 07-08-12, 09:14 AM

Some more info. Humidity is around 50 during day,and 60 at night. Temp at daytime is 26 degrees Celsius,and 20-21 at night. Lightcyclus is 18/6. They have been fed ca half of the recomanded strength of Canna Aqua Vega A+B,ph is at 5,8. Growing in Leca,in wilma pots that i think is ca 15 L. But they are growing so slow,and getting limegreen between vains still.

**Tabbatha** · 07-08-12, 09:23 AM

Hey aston,

It's mag def.

It's possible that your ph pen is a point off and that your res is actually 5.7, for example, in which case mag's being locked out. This appeared to be the case with another highly experienced grower recently. However, judging by your feed.water regime in the OP I'm waging it's just a simple lack of mag.

I'm not a hydro grower but I'm reading lots (so take all this accordingly), and it appears that the best thing to do (if you're sure the ph is accurate) is to raise it a little for a day or two so that mag is accessed more easily (ph 6 is good). And/or you can foliar feed epsoms (1/4 tsp p/ltr at a ph over 7) to give her access right away while you deal with the res issue.

Hope that helps a bit chum. If not I'm sure a proper hydro grower will help out.

**astonweeda** · 07-08-12, 09:33 AM

Originally Posted by Tabbatha

Hey aston,

It's mag def.

It's possible that your ph pen is a point off and that your res is actually 5.7, for example, in which case mag's being locked out. This appeared to be the case with another highly experienced grower recently. However, judging by your feed.water regime in the OP I'm waging it's just a simple lack of mag.

I'm not a hydro grower but I'm reading lots (so take all this accordingly), and it appears that the best thing to do (if you're sure the ph is accurate) is to raise it a little for a day or two so that mag is accessed more easily (ph 6 is good). And/or you can foliar feed epsoms (1/4 tsp p/ltr at a ph over 7) to give her access right away while you deal with the res issue.

Hope that helps a bit chum. If not I'm sure a proper hydro grower will help out.

Thanks a lot

I have the Canna monoproduct that is Mg (1 litre bottel I have the N mono,and K mono as well). I will try foilarfeeding tonight when lights go out. I calibrate my ph pen once a week,so i think it is ok. I have also suspected K defency,but there has been little black "dots" on the leaves after they has turned yellow,and i have suspected N defency because of the slow growth. And Mg because of the symptoms. I guess i might have had mulitple lockouts earlier,because of the bad ph+ i used,that was bought in a pet-store,and was ment for fish,and hard tap water in my house. This made me think i might had some lockouts. Any ideas of how soon i am ment to see recovery?

**astonweeda** · 07-08-12, 07:59 PM

How much Mg pr L when foilarfeeding? Any ideas anyone? As recomanded on the bottle? That says 1-2 ml pr L

**astonweeda** · 08-08-12, 02:07 PM

Did the foilarfeeding last night. How long does it take to show "results"? Anybody?

**Tabbatha** · 08-08-12, 03:04 PM

Should be 24hrs, aston.

**astonweeda** · 08-08-12, 08:25 PM

So hopefully tomorrow. I will post some more pics then.

**astonweeda** · 12-08-12, 08:32 PM

Foilarfeeding didnt help

planter3 008 - Kopi.jpg planter3 004 - Kopi.jpg

**charleyfarley** · 13-08-12, 12:13 PM

If they were my plants i would put this down to N only! and i would remove the leaves which are bad then flush for at least a week clean them right out then start again with a N feed

**astonweeda** · 13-08-12, 02:50 PM

That is my plan too. The flushing at least. I gave them water today. Ph 5.9. I will let them dring that until friday,and then try to start feeding again. Or should i foilarfeed with N maybe?
I hoped maybe the flushing would kind of "reset" the illness,and hope they are able to take up nutrients again after five days ov waterfeeding.
Thanks for answering.