Indoor HELP!! pH issue or nute burn?!

[vv15629]

Ok so I've got three candy lush auto at about 6 weeks. Two look great but the now biggest one has looked a little of since early on. I really don't think it's nute burn since the plant had slight yellowing before nutes really came into play. So I'm assuming ph issue however if I measured correctly maybe not.

I tested ph two ways. I checked feed water at 6.0 and check run off at 6.2 which should estimate my soil ph at 6.4. Good, right?

Then I checked by mixing 1 part soil with 2 parts feed water and that ph checked out at 6.3 and then 6.4. Still good, right?

So what could be going on??

 

[moutros]

Could it be that you have overwatered? Im just suspecting that because of the leaf curling, as for the brown spots it looks like either nute burn or cal/mag deficiency but thats just my opinon and i only know outdoor grows.

 

[vv15629]

Nah don't believe so. I let my plants tell me when to water. Just wait for them to have a slight droop then water.

 

[namvet25]

What kind of nutes are you using npk numbers please,and how often do you feed.Are you using cal/mag?

 

[pop22]

That's ph issue. I'd test your ph ASAP.......

 

[vv15629]

That's ph issue. I'd test your ph ASAP.......

I did just test it explained in the original post

 

[vv15629]

What kind of nutes are you using npk numbers please,and how often do you feed.Are you using cal/mag?

For grow nutes I was using 6-4-4 never at full strength. I just fed yesterday first round of bloom nutes 4-26-26 at half strength

 

[pop22]

This might help you, I use it often.

http://www.growweedeasy.com/cannabis-symptoms-pictures

 

[vv15629]

I'm just curious if it may just be the genetics of this plant causing the issues and I wonder that for a couple reasons. Out of the three plants the one with problems is bigger and growing much differently from the others as far as being much bushier and full of offshoots compared to the other two. Also, it showed signs of discoloration since very early on.

The ph readings on all the plants is exactly the same so why just this one having issues? Maybe since it's showing to clearly be a different phenotype then the other then maybe perhaps it needs a slightly different soil ph than the others to thrive?

 

[vv15629]

Anything else?