A little help please with with my xj13 please

[Snype]

This is my opinion to what is going on with your plants. Because the majority of your plants are perfect and only 4 or 5 are having problems, I believe that some of your plants are not from the same mom and need a different nute schedule. The light green leaves and the yellow leaves look like a Nitrogen deficiency to me and not a lockout because your pH is perfect. A lot of coco growers don't like to flush every week and instead they like to give a weaker solution throughout the cycle. Because of the spots on the affected leaves, it looks similar to a Boron problem. When you have a Boron problem it also can make some of your leaves yellow and drop off. So I can't say 100% that you have a N deficiency but I suspect that one of these are your problems.

If your plants take 2-3 days before they need to be watered again, I personally see this as a problem. They are in 1 gallon containers and should be drinking more. You stated you were going to turn off the AC and if you do, I see you having a humidity problem if you were to do that. Most AC's also act as a dehumidifier so be careful of getting those levels up too high. I might edit this post in a few to add more but do you have any more questions?

 

[redonk]

Thanks for your help, I didnt turn the ac off I just raised the temp 2 degrees. also the dehumidi keeps the rh in check. I will try feeding the the sicker plants some gh grow and also some boric acid. I'll start off slow. Do you think i should feed my reg feeding schedule as well as these supplements to the sickies? It looks like i'll be hand watering these guys. thanks again and ill report back in a few.

 

[Snype]

Thanks for your help, I didnt turn the ac off I just raised the temp 2 degrees. also the dehumidi keeps the rh in check. I will try feeding the the sicker plants some gh grow and also some boric acid. I'll start off slow. Do you think i should feed my reg feeding schedule as well as these supplements to the sickies? It looks like i'll be hand watering these guys. thanks again and ill report back in a few.

This is just my opinion but other experienced growers might have a different opinion. Personally if they were my plants I would treat some for N and some for Boron, just so I can know for the future what it really was but this is a decision that you have to make for yourself.

 

[OrganicMonkey]

Looks like not enough fertilizer, there may also be an over-watering problem. It's hard to tell with the low PPM, but what is your drip set at?

 

[redonk]

Looks like not enough fertilizer, there may also be an over-watering problem. It's hard to tell with the low PPM, but what is your drip set at?

i use t barbs attached to stem of the plant with 14 inches 1/4 inch coming off a 1/2 inch line with a 700 gph pump and there are 35 sites per pump. i do 2 spaced 1 minute soaks at the beginning of the light cycle on the days that they need water(when the pots get light).

 

[Massproducer]

You are treating your medium too much like soil or peat, it has to be kept moist at all times, not really wet but moist, coco does not respond well to a regular wet dry cycle. You gotta water everyday. Also as snype said, you do not want to flush coco unless there is a major problem because you are liable to flush a lot of positive cations out of the medium really throwing off you CEC.

I would say that these plants look like they need a bit of N,P, but more P then anything. In coco if not using coco specific nutes you gotta lower K and raise P,Ca and Mg, you are getting the Ca and Mg from the cal mag but those deeply purple leaf stems are leading me to believe your P levels are pretty low, which usually happens at around week 2-3 of flowering after the stretch. Remember also that flowering plants love P and even in other mediums it is usually not sufficient but in coco it can become a problem.

Good luck

 

[grapeman]

Interesting seeing your SOG with this variety. I hope you post up through harvest here as my impression of the xj-13 after seeing it grown in LA (I'm mothering one now for a June grow) is that it's a bit too tall and vigorous to be grown this way. I could be wrong.

 

[redonk]

You are treating your medium too much like soil or peat, it has to be kept moist at all times, not really wet but moist, coco does not respond well to a regular wet dry cycle. You gotta water everyday. Also as snype said, you do not want to flush coco unless there is a major problem because you are liable to flush a lot of positive cations out of the medium really throwing off you CEC.

I would say that these plants look like they need a bit of N,P, but more P then anything. In coco if not using coco specific nutes you gotta lower K and raise P,Ca and Mg, you are getting the Ca and Mg from the cal mag but those deeply purple leaf stems are leading me to believe your P levels are pretty low, which usually happens at around week 2-3 of flowering after the stretch. Remember also that flowering plants love P and even in other mediums it is usually not sufficient but in coco it can become a problem.

Good luck

So Massproducer do you think my same nute schedule just everyday for a minute at the beginning of the light cycle .

 

[redonk]

Interesting seeing your SOG with this variety. I hope you post up through harvest here as my impression of the xj-13 after seeing it grown in LA (I'm mothering one now for a June grow) is that it's a bit too tall and vigorous to be grown this way. I could be wrong.

I will keep this grow updated. And I appreciate the input.
I have seen this strain grown with this method with the same nute schedule and they got 2+ pounds per light.
Like I said this is my first with this strain, coco, GH and room.

Ive been a soil, fox farm guy and I never had any problems. Im trying to step my game up.

 

[redonk]

Should i feed the sicker plants just a gh kool bloom (0-10-10) and gh grow mix(2-1-6)?

 

[Snype]

I personally wouldn't be adding any grow to them in flower. Cut out the flushing every week and bump up your nutes slightly on the ones that show the symptoms. Keep your pH at 5.8.

 

[redonk]

thanks will do. hopefully things will turn around and i will post pics.