what is wrong with my ak47 (2 weeks flower)

Hey all im having dramas with my ak47. As you can see below 1 week she was fine next week yellowing leaves turning brown and crispy which seems to be going up the plant.

I have a pineapple chunk growing next to it not showing the same problems.
I'm in dwc btw

Using as follows

2ml tap conditioner (which I'm about to ditch)
2ml silica
10ml cal mag
40 ml canna flores a and b
20ml canna boost
1.5ml pondzyme

Temperature of the res is 69-70
Ph is 5.8
Ppm 800-900

She is drinking half as much as my other girl which tells me something is wrong.

No idea why this girl seems to be dying. Any advice?
Should I drop the canna boost? I'm suspecting maybe an overdose?
I'm at a loss.





1 week earlier

Have you been monitoring EC levels?
Are you sure it's not nute burn???

If not it could be
a Potassium or a Magnesium deficiency.
Warped leaves are often the sign of a deficiency.

Leaf tips like burnt paper are often the sign of nute burn.

Yeah I have this ppm pen

http://m.ebay.com.au/itm/170957835288?nav=SEARCH&sbk=1

Not sure what scale it is. I have looked everywhere and haven't been able to find out.

I have been feeding around 900ppm give or take 50.
So I guess they could be overfed. I thought ak47 could take high ppms.

I'm doing a res change tonight so ill add half strength and see if she perks back up.

It looks like a lockout issue. Are you giving it calcium every exchange?You making sure its getting ph 5.5 to 5.8 water which is after nutes mixed and then keeping the ph there?Could be copper def or potassium def. Take a look at this page which shows all issues and compare it to what your seeing and what your feeding.. http://www.growweedeasy.com/marijuana-symptoms

The ph has always been around 5.5-5.8
Always tested after adding everything.
I had a look at the page and honestly the closest I could see was root rot.

The roots are a tan color def not slimey and smelling and rotting. The only thing I can think of was when I looked in the res there was 2 little bits of leaves floating around in there. Must of gone through the net pot.
May be causing the roots to rot?
Really not sure.

Id give her pure 5.5 ph water for like 5 days and see how she reacts. Im thinking to much calcium locked it up and you need to clear her out then continue on.

If any suspicion of root rot if you run the 5 days just water add a table spoon of regular 3% peroxide in the water on day 1 and day 3 of the 5 day flush out

FilthyFletch said:

Id give her pure 5.5 ph water for like 5 days and see how she reacts. Im thinking to much calcium locked it up and you need to clear her out then continue on.

Click to expand...

Ok cool I'll give this a shot. I'm positive its not rot.
I'm sure doing this 2 weeks into flower is going to have some effect on yield. Better than chopping her down since I've come this far.

Would you say to add pondzyme to just plain water or strictly just plain water?

Thanks heaps

Do you recommend using cal mag in flower? Maybe I have over done it. 10ml per 15 ltrs I wouldn't of thought was overboard.

Id go just the plain water. Do you use tap water and if so have you ever had it tested or know the ppm break down of whats in it?

FilthyFletch said:

Id give her pure 5.5 ph water for like 5 days and see how she reacts. Im thinking to much calcium locked it up and you need to clear her out then continue on.

Click to expand...

FilthyFletch said:

Id go just the plain water. Do you use tap water and if so have you ever had it tested or know the ppm break down of whats in it?

Click to expand...

Yeah the ppm from the tap is 40 so very low. I have left it out for 24 hrs to evaporate the chlorine.
I think I'm going to go down this path and possibly add some h202 (even though I have been trying to avoid it)
I only have 50% h202 made from GT.

I2icho said:

Yeah I have this ppm pen

http://m.ebay.com.au/itm/170957835288?nav=SEARCH&sbk=1

Not sure what scale it is. I have looked everywhere and haven't been able to find out.

I have been feeding around 900ppm give or take 50.
So I guess they could be overfed. I thought ak47 could take high ppms.

I'm doing a res change tonight so ill add half strength and see if she perks back up.

Click to expand...

http://www.manicbotanix.com/hydroponic-grow-guide/ec-to-ppm-conversion-chart.html

Here's a chart that shows EC to CF to PPM
USA, Europe and Australia all have different scales....
Pointlessly confusing but what can you do????

PPM 900 (if USA is EC 1.8 - or pretty high)

pH5.2 to 6.2 is OK with hydro)

Are you using Canna Aqua Flore A&B?
If so, it has a STRANGE NPK ratio

I don't use it
I just stick with Aqua Vega.

NorthofEngland said:

http://www.manicbotanix.com/hydroponic-grow-guide/ec-to-ppm-conversion-chart.html

Here's a chart that shows EC to CF to PPM
USA, Europe and Australia all have different scales....
Pointlessly confusing but what can you do????

PPM 900 (if USA is EC 1.8 - or pretty high)

pH5.2 to 6.2 is OK with hydro)

Are you using Canna Aqua Flore A&B?
If so, it has a STRANGE NPK ratio

I don't use it
I just stick with Aqua Vega.

Click to expand...

Yeah I'm thinking next grow to invest in a ec meter. That way you know exactly where you're at.

Nah using canna classic simular to canna aqua.

My other girl is twice the size and a lot more healthy and they hace had the exact same treatment so it's pretty confusing. Not sure what's causing the issues esp of the other girl is fine.

Here is a pic of her

I2icho said:

Yeah I'm thinking next grow to invest in a ec meter. That way you know exactly where you're at.

Nah using canna classic simular to canna aqua.

My other girl is twice the size and a lot more healthy and they hace had the exact same treatment so it's pretty confusing. Not sure what's causing the issues esp of the other girl is fine.

Here is a pic of her

Click to expand...

She looks great.
Strange that one can respond so differently to the other.

if you already have a PPM meter there's really no need to buy an EC pen.
just confirm that, where you are, PPM 600 = CF 10 = EC 1.0

You're in the USA, yes?

I've just looked at that Ebay link and see it's in Aussie Dollars
(so I assume you're in Australia)

Aus PPM 900 = EC 1.3
Which isn't particularly high (not for a plant her size).

If this PPM/EC level is correct, it's very unlikely to be Nute burn.

??Have both plants have been fed/watered from the same reservoir???

i got one for you can you let us see the roots???? some times root rot dose the same can we look at your roots

i grow in water when i see leafs like that ppm check ph check and root check?? those are the rules to hydro also afids, nats, and all kinds of shit can cause root problems that will make them get infected lets take a look please..

H202 in res every 4 days 50% grade at 1000:1 . Also I think you could bump up the nutes to 1100.

*BUDS said:

H202 in res every 4 days 50% grade at 1000:1 . Also I think you could bump up the nutes to 1100.

Click to expand...

I'm assuming you're an Aussie (from the Chopper avatar?)
Did you know that the EC/CF - PPM ratio is different in USA, Europe AND Australia???

Three different ways to measure (EC, CF or PPM TDS)
and THREE DIFFERENT ratio's....???
Why is such a simple measuring system made so disparate and unnecessarily complicated???

http://www.cannaversity.com/cannaversity/article.php?id=041

Here is a chart. this is why I just use EC. I do not want to second guess all the time.

Hyptno said:

http://www.cannaversity.com/cannaversity/article.php?id=041

Here is a chart. this is why I just use EC. I do not want to second guess all the time.

Click to expand...

It's the same chart that I posted on the previous page.
So you owe me a payment for copyright violation.

I also just use EC
but CF also doesn't change
and is, if fact, EC with the decimal point removed.

As for PPM this is one time when the Yanks have it best.

500 to 0.1 is much easier than 700 to 0.1 (Aus)
or 640 to 0.1 (Eur).