Need a diagnosis. Ongoing problems.

[Architechno]

I thought I had fixed my problems but no such luck.

These are 4 weeks old in 25% coco 75% FFOF. Had some overwatering problems early, then I realized I was watering with a low PH too. After I raised the PH they were ok, but developed what I think was an N deficiency. I fed them a little and that didn't solve the problem. They are getting FF Grow Big and a little molasses and superthrive. Things are continuing to get worse...

Help me IC Cannabis Infirmary! You're my only hope.

 

[dillhole]

Are you sure you have the pH problem under control? The pics look to me like a N lockout. If you have fixed the soil pH the plants may be fine. It's hard to tell from the pics but the newer growth looks ok. Damaged leaves sometimes never recover. The plant will continue to leach nutrients from the leaves until they die and fall off.

What is your runoff pH now?

DH

 

[noreaga]

Ph swing or N def. I would test the run off and go from there, probably stressed a lil from the swing. Theyll come around for sureee

 

[ibjamming]

Top dress with some lime...water it in...it will temper your ph...and unlock the N.

 

[Architechno]

ok well if you guys think it's still PH and N issues, I think I'll just let them dry out and water again with 6.5-6.8 PH, and 1/2 strength Grow Big.

Do I need to wait to add my supplements until they are healthy again? I am using molasses, superthrive (veg only) and kelp.

 

[Architechno]

also, I've given rep to 4 or 5 ppl since I last gave it to u ibjamming... but it wont let me again. O well
Thanks
Much appreciated guys.

 

[dillhole]

ok well if you guys think it's still PH and N issues, I think I'll just let them dry out and water again with 6.5-6.8 PH, and 1/2 strength Grow Big.

Do I need to wait to add my supplements until they are healthy again? I am using molasses, superthrive (veg only) and kelp.

I would watch new growth closely for signs of pH stress. Twisting, spotting, slow growth, etc. If you do see something, I'd go ahead and flush with a pH'ed solution. Water enough to get a little runoff to check the pH and then adjust your solution accordingly.

Your plants are four weeks old. That's enough time for the buffer in the soil to get used up, so I'd be prepared for a repot in the near future. If the plants look fine in the next few days, you're probably safe to resume your feed schedule. I'd just make sure the pH is under control first.

I wouldn't add any supplements until I know the pH is ok. Some people just flush with a pH adjusted nute solution. I prefer to minimize the number of variables when I'm troubleshooting. That's just me though

DH

 

[noreaga]

no prob arch, let us know when u get it sorted out. you got a ph pen or somthin?

 

[Architechno]

no I just have the drops, where you guess the PH by the color lol. I think they might get another feeding tomorrow, or I may at least moisten the top and bottom... Incase you didnt notice the bottoms are mesh. And they will not be re-potted, they are in their final homes. This is my first grow and it is going to be small, LST will be beginning soon, of course. As soon as I can clone I will take 2 from each plant... sex one and keep the other for a mother, then re-pot the original females into wide but shallow pots and after they recover, into 12/12 with them. I'm hoping to get them healthy, give them 3 or 4 days to stabilize, then take the clones.