is this nuteburn or calcium def???

[mrT]

wasap, having som problems with ma babys

they are DP in coco, handwatering everyday.

3 weeks in bloom. 2 x 600 hps

ph is around 6, the runoff also

using coco nutes

I flush about every other weak

The EC is 1.1
wich I think is kinda low, but maybe not, does it look like nuteburn?

it startet on the lover leaves, and now the upper leaves are getting affected.

I ran EC 1.0 all in veg, and they all seamed fine, I switched to bloom fert about 1 week ago.




















bugs anyone?





peace!

 

[sirgrassalot]

It looks like the start of calcium deficiency. Damn yellow lights.

 

[MynameStitch]

It may be a calcium problem, but to find out for sure, need some more information...... Calcium does not start on the lower parts of a plant, it starts in the middle to upper parts......how often are you feeding them and the dosage?
Can you take a few pics of the affected leaves without the HPS light on?
What are you using to test your pH?
Are you using RO water? Tap?
WHat canna nutrients are you using?

 

[mrT]

thx everyone!

I have cut out all the lover parts of the plants, when I did this all plants looked fine, so u can kinda say that the symptoms started in the middle of the plant. beacuse the symtoms started like 2 week after I cut out all the lover parts.

I water them everyday.

im using tapwater, the EC of the plain tapwater is 0.22

the runoff EC, when watering with some tapwater was 0.60 before, I flushed them all today.

Im using canna cogr nutes. the EC is around 0.90 when I added the A+B nutes. them I add some magnesium to get the EC around 1.1



Is 6 too high ph ???

Im adding extra liquid canna magnesium. so its maybe beacase of that the MG def isent showing.

ima try getting some new pics, peace!

 

[MynameStitch]

DOH! I missed the everyday part..... You should never have to water your coco everyday.... are you feeding them everyday?

Potassium and calcium can start in the middle of the plant, I need more pics to find out which one it is as they both can start out the same way, both can start on the leaves outter edges.

Depending on what 6 pH it is, if its 6.5 it's too high, you can have a range in coco, but not all plants can take the range which is why some use a lower range while some can have no problem growing in a higher pH range.

Can you please post more pics.... also do you feed every watering?

 

[mrT]

the Ph is around 6.0, somtimes a little higher, so maybe thats the problem then

what is the ideal ph for coco? I always thought it was around 6 was good, what should I aim for?

so I added to much Mag then? I always tought it was to litte, its just like 2-3 ml in 9 Liters of water. maybe your right doh.

One thing I noticed is that the cogr blom fert contains less Cal than the veg, so since I stoped with the veg fert it all got worse.

sould I foliar feed with some calcium to start with? and try to lower the ph?


I water everyday, with fert, 2 dl for each plant. cannazym, supervit, topmax, blom boster + A+B canna cogr.

Ill the to get some better pics tomorrow

thx!

 

[MynameStitch]

But using some time a lower ph, as i explained in my last post, allows to water everyday without problems: on my experience, coco works better this way during the flowering stage. I run coco in e&f, with up to 3 dayly waterings.

Ebb and flow is one thing, but hand watering everyday is another, if you are hand watering everyday there is bound to be problems.

Watering everyday with ebb and flow is necessary, but in this case, there is bound to be some problems watering everyday like he is...

As I explained before mrT, yes some plants can take a higher range with no problems, if you are having problems with your pH, you need to try to keep it stable, by it going up and down there will be a problem.

IDeal is a range 5.5 to 6.3 is an ideal range, but if it's not staying stable is a problem.
Your problem is not magneisum, it's either calcium and or potassium.
Pics would help out a lot more now.....
with the HPS light being on I can't tell as the light hides the colors well.
I would stop using supervit everyday, this will cause a buildup and lock out calcium, have seen it many times. REason why it's not as worse is you water everyday not allowing anything to build up even though you are replacing it with some.

You should always give your plant a nice drink without nutrients every now and then to help rinse out any un-used nutrients, it's healther for the plant and they will thank you for it.

What is the amount you are using? There is bound to be some lockout using all that nutrients every watering.

So how much of each do you use with how much water?

 

[mrT]

thx for the fast answers!

Im planning om setting in a drip system soon with spiders, so I will water everyday, with the same nutrient solution, dripp to waste. any tips on how I sould keep my nutrient soultion? ph and such, im planning om beeing away from the plants like 3-4 days at a time.


In 9 liters of water, i give them around 15ml A+Bm thats 15 each.
9 ml bloombost, 9 ml topmax, 2 drops supervit, 18 ml cannazyne.

 

[mrT]

but since I flush regulary, I wont have any nutrients left in my coco after the flushes.

whats the diffirence betwen the regular coco nutes, and the cogr?
maybe I sould change since im not using the canna cogr coco to grow in
Im using the BioNova Bricks.

 

[HeadyPete]

I grow in coco and nothing knna said matches my findings.

5.5? Too low. Ideal ph range is 5.8 - 6.8 with 6.3 being the ideal middle. My plants drop below 6 and I have lockout. Cal and P.

If I don't feed cal and mag every 10 days or so, I get defs.

Stitch, don't you think feeding those nutes every day is too much and causing some burn?

 

[mrT]

but since coco dont have any nutes, souldent u always feed with nutes? thats what I always tought. becuase its a hydro medium.

peace!

 

[MynameStitch]

Yup, petey, there is some lockout issues going on here, the only reason why it's not worse is, because he waters everyday not allowing it to sit and build up even though he is feeding with the water.... he still rinses out some stuff when he gets run off.
Yes, you should feed with nutes, but coco is like a sponge.... it holds nutrients in you don't need to feed everyday.

 

[HeadyPete]

It also depends on how strong your nutes are, how your strains can take it, amount of lighting, etc.

Once in a while a plain water watering is necessary. I don't think it is necessary to water everyday, and seems like a hell of a lot of extra work. My 4" sq potted moms go 2-3 days in between waterings.