ph buffer solution

[oldman_67]

Hi all,

Calibrated my ph pen. And now that I have it seemed a bit out, was out by .4. After adjusting it and watering the plants it seems they have gone a light green. to suggest nute lockout.

 

Is it possible my ph buffer solution was out of date or off ? It was an old tub.

 

I'll be buying more tonight but was just wondering.

 

Thanks

[bufo marinus]

Yawn... I'd say it's the operator.

[oldman_67]

Boofhead with Stella "insight" once again.

[STONEDAJ69]

Yawn... I'd say it's the operator.

 

I'd tend to agree.

[Syb3 rm3nt41_%20]

hey oldman,

 

Bugger to hear you have issues....... you said your ph pen was .4 off ... what ph are you feeding your plants now, what nutrients, what medium are you using ...... and what strength are the feeds you are feeding your plants .......

 

cheers'

[oldman_67]

How can it be operator error? It isn't complicated to calibrate a meter.

 

I was feeding at 5.8 with a runoff of 5.9 , everynow and then I'd feed a touch lower if it read 6.

Feeding my two outdoor plants at 1.6 and the two autos the same.

 

Noticed my autos slightly turning a pale green, then one of the outside plants went very light green.

 

Checked the calibration and in the ph solution it was out - thought that could be the problem. Just seems weird to be out by so much.

 

In coco feeding with dutchmaster flower a and b.

[Cyclops]

Not sure about the problem but I found a bottle of solution that is about 15 years old and checked it after your post, it was spot on.

 

Apart from that my PH is all over the place, in a range from around 5 to 7, in flower it drops every day (which is actually a good thing as it shows the plants are pigging out ) so I'm using PH up most days.

 

When I was growing in Rockwool I never bothered about PH, in fact didn't own a meter for years and never had a problem.

 

Just a thought but maybe you should let the PH drift around a bit more, maybe up to 6.4 or even a little higher than that.

Edited October 15, 2012 by Cyclops

[The Hash Nibbler]

Are ya letting ya coco dry out properly Oldman? sometimes bogging em down will give the same look as lock out, Paling/yellowing leaves down low to start, slow growth.

I would just get the PH one drop test kit....... I never use a meter. Meters go wrong, or arent calibrated properly , or are just cheap shit from China.

Chemical re-action never reads wrong......

 

Peace. Nibbler.

[oldman_67]

Haven't heard of that nibs ill have to look into it.

 

And Cyclops it does move a bit, but it only seems to move if I've made a mistake

[STONEDAJ69]

How can it be operator error?

 

Sure it's not hard to calibrate a ph meter, it's not hard to do a lot of things.

 

However you seem good at stuffing up a lot of things.

 

Peace.