Yellow spots on leaves. Need help

buzzinga

Member
You have to cut your PPM!
Make sure your runoff is 5.8 or so
Cut any calmag now! Calcium is causing this.
Feed at 200ppm or so, and 5.8.Ph. Flush it through!
MAKE SURE YOUR RUNOFF READS THE SAME!
Let us all know soon.
Hey, do you think 200 ppm would be sufficient for a week 4 autoflower? I have attached a picture below. Flushed and brought the ph down to 6.3. Will do another flush and try and bring it down to 5.8-6. Plant height is about 6.5 inches and is quite bushy.
 

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Tim1987

Well-Known Member
It should be ok at this stage
You need to buffer your media back to normal.
You need a FLUSH!
Check the runoff too. Ph and ppm.
Dont be lazy!!
Tim
 

buzzinga

Member
It should be ok at this stage
You need to buffer your media back to normal.
You need a FLUSH!
Check the runoff too. Ph and ppm.
Dont be lazy!!
Tim
Yes, absolutely. Gave it a good flush today with ph 5.8 and the runoff was about 6.3 - 6.4. Its pretty easy to bring down the PPM but I always face a problem with Ph. Is that normal?

Thanks a lot, cheers :)
 

Tim1987

Well-Known Member
Yes, absolutely. Gave it a good flush today with ph 5.8 and the runoff was about 6.3 - 6.4. Its pretty easy to bring down the PPM but I always face a problem with Ph. Is that normal?

Thanks a lot, cheers :)
No worries
Do you have hard water? Or are you using calmag?
That ph is too high!!!
Calcium is a SWEETENER.
Probably why youre high.
Take some cal AND mag out.
Flush it.
Check your runoff.
Done.
Good luck
Tim
 

buzzinga

Member
No worries
Do you have hard water? Or are you using calmag?
That ph is too high!!!
Calcium is a SWEETENER.
Probably why you're high.
Take some cal AND mag out.
Flush it.
Check your runoff.
Done.
Good luck
Tim
No. I use RO water and that's the reason I was using cal-mag. When do you suggest I should start using it back?
Thanks a lot, Cheers
 

CookieKush

Well-Known Member
No. I use RO water and that's the reason I was using cal-mag. When do you suggest I should start using it back?
Thanks a lot, Cheers
Try half doses once you know the ppm / ph run off and such is ok. Gradually increase it while keeping the pH in check :-{)
 

Tim1987

Well-Known Member
No. I use RO water and that's the reason I was using cal-mag. When do you suggest I should start using it back?
Thanks a lot, Cheers
Just go by your ppm and runoff.
You need to have an idea of the ph swing.
Ph high- calcium toxicity
Ph low- magnesium toxicity
Just check your ppm vs ph. Itll give you a REALLY good idea about your rootzone.
Reason i say not to use calmag is, calcium needs magnesium, and vice versa, in almost equal parts. Nitrogen needs both!!
Just think of 2-0-0 calmag :wink:
You need to find out which of the three is causing your issue.
Also whether you have lockout or deficiency!!
Good luck
Tim
 
Dont worry.
All smooth sailing from here.
Plant just needs a week or two, to catch up.
You're golden :bigjoint::bigjoint::bigjoint:
This is only my 2nd grow, but on the first run the runt actually produced more, so I'm getting my hopes up lol. Topped the runts sister yesterday and literally already have new growth.. I'm fckng amazed by this. ( kind of just bragging) lol
 

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Tim1987

Well-Known Member
This is only my 2nd grow, but on the first run the runt actually produced more, so I'm getting my hopes up lol. Topped the runts sister yesterday and literally already have new growth.. I'm fckng amazed by this. ( kind of just bragging) lol
FANTASTIC MATE :bigjoint::bigjoint:
You just made me happy in my pants :P
Its gonna grow like a weed. Enjoy your 2nd show
Happy grow, keep posting :peace::weed:
 
New question, if nobody minds I post here. So here we go.. thismorning was a feed day, I was going to give the girls their first and possibly only dose of grow big since I'll be going into flowering soon. Well ( i mix my water at night so it hits room temp by morning) I noticed it took a shit ton of ph down to get my nutes to read 6.3 so out of curiosity I double checked my ph pen with some GH liquid solution, and my water was in the low 4s... so thismorning I woke up and calibrated my pen.. fixed everything and went to water, mind you this is day 3 between waterings, and the big girl is still wet and looking over watered. Now it' been 35 days, and these fabric pots have been bone dry by the 2nd day, ive been waiting 3 to be safe.. would my ph being so low cause the plants to not take up water? Should I flush the soil with accurate phd water? Or can i just wait until they dry and go back to normal schedual, maybe add a 4th day to the dry cycle?
 

Tim1987

Well-Known Member
New question, if nobody minds I post here. So here we go.. thismorning was a feed day, I was going to give the girls their first and possibly only dose of grow big since I'll be going into flowering soon. Well ( i mix my water at night so it hits room temp by morning) I noticed it took a shit ton of ph down to get my nutes to read 6.3 so out of curiosity I double checked my ph pen with some GH liquid solution, and my water was in the low 4s... so thismorning I woke up and calibrated my pen.. fixed everything and went to water, mind you this is day 3 between waterings, and the big girl is still wet and looking over watered. Now it' been 35 days, and these fabric pots have been bone dry by the 2nd day, ive been waiting 3 to be safe.. would my ph being so low cause the plants to not take up water? Should I flush the soil with accurate phd water? Or can i just wait until they dry and go back to normal schedual, maybe add a 4th day to the dry cycle?
Id, flush it with some ph'd feed solution. They'll droop right down, when ph is low.
Damn some ph pens, bro.
If im right, white vinegar, has a ph of 3....
But each point down is 10 times the acidity. Works in the other direction too.
 
Id, flush it with some ph'd feed solution. They'll droop right down, when ph is low.
Damn some ph pens, bro.
If im right, white vinegar, has a ph of 3....
But each point down is 10 times the acidity. Works in the other direction too.
Right on i happened to have 1 last packet of 4.01 ph buffer but I will defiantly remember the white vinegar.. I think my batteries are low in the ph pen. Thanks Tim, I was hoping you'd chime in. Lol my hero this grow
 

Tim1987

Well-Known Member
Right on i happened to have 1 last packet of 4.01 ph buffer but I will defiantly remember the white vinegar.. I think my batteries are low in the ph pen. Thanks Tim, I was hoping you'd chime in. Lol my hero this grow
All good man. Help me out, if i need you one day. :peace:
I only meant to use the vinegar, as a comparison, sorry.

If all goes well I plan on flipping to flower in 2 weeks :)
Sounds good bro.
Im about 3 weeks aheah of you.
We should finish close to each other, man:cool:

I'll keep in touch :peace:
 
All good man. Help me out, if i need you one day. :peace:
I only meant to use the vinegar, as a comparison, sorry.



Sounds good bro.
Im about 3 weeks aheah of you.
We should finish close to each other, man:cool:

I'll keep in touch :peace:
Hell yeah, I don' know how much help I'll be though lol
 
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