Indoor Please help my Bubba Kush Auto

[Trooperwife]

Day 48 - She seems better now but still a little worried.

 

[Waira]

:smoking: --- coco hates any kind of dry, part of it's "charms" as a soiiless medium,... very different from true soil, and can't be treated as such either,... Arthur has addressed this already (thanks mate!).... What's the base ppm going in, just the water? And the source of water? Any Ca-Mg going in? Coco is a huge Ca hog, another charm it has, peculiar CEC properties (cation exchange capacity),.... Anyway, dry-outs damage roots, screw up the pH, drive the relative dilution of dissolved nutes in there down (too strong in ppm's when dry)... coco needs to be well moistens at all times...
That said, I'm stumped at how the ph is getting driven up in run-off, that's weird as hell for coco! Nothing else in there you added, like lime? Coco can have too much native K sometimes when not processed properly, which can drive pH up, but I see no signs of K toxicity that would occur because of this,...
....nothing to do for now, looks like the run-off ppm's are OK, they shouldn't be more than about 250ppm more than inputs when you are feeding to 15-20% run-off,... coco is like hydro in many ways,..... let's see what a few days brings,... roots likely are pissed, so that will be the bottleneck for now,.. a root tonic and inoculants can help with recovery.....

 

[Trooperwife]

:smoking: --- coco hates any kind of dry, part of it's "charms" as a soiiless medium,... very different from true soil, and can't be treated as such either,... Arthur has addressed this already (thanks mate!).... What's the base ppm going in, just the water? And the source of water? Any Ca-Mg going in? Coco is a huge Ca hog, another charm it has, peculiar CEC properties (cation exchange capacity),.... Anyway, dry-outs damage roots, screw up the pH, drive the relative dilution of dissolved nutes in there down (too strong in ppm's when dry)... coco needs to be well moistens at all times...
That said, I'm stumped at how the ph is getting driven up in run-off, that's weird as hell for coco! Nothing else in there you added, like lime? Coco can have too much native K sometimes when not processed properly, which can drive pH up, but I see no signs of K toxicity that would occur because of this,...
....nothing to do for now, looks like the run-off ppm's are OK, they shouldn't be more than about 250ppm more than inputs when you are feeding to 15-20% run-off,... coco is like hydro in many ways,..... let's see what a few days brings,... roots likely are pissed, so that will be the bottleneck for now,.. a root tonic and inoculants can help with recovery.....

Thanks so much for the detail reply.

Yesterday for example, I gave 2L with 300ml run off, nutes (Canna A&B,Rhizotonic,Zym,CalMag,Boost), it was pH 5.7, 1000ppm, tap water (hard water, straight from tap pH 8.2). Run-off with 620ppm, pH 6.8. Nothing more added to the plant, except mentioned above.

 

[Waira]

I'm stumped man, ppm's went down in run-off?! How much of that 1000ppm ( too strong, especially now working out these troubles) is the hard water's base ppm? Only thing I can guess at is the coco's CEC is just FUBAR, and it;s binding the hell out of the nutes going in,.. but that should only affect the cations, not the anions (negative charge) .....

 

[Trooperwife]

I'm stumped man, ppm's went down in run-off?! How much of that 1000ppm ( too strong, especially now working out these troubles) is the hard water's base ppm? Only thing I can guess at is the coco's CEC is just FUBAR, and it;s binding the hell out of the nutes going in,.. but that should only affect the cations, not the anions (negative charge) .....

This is my second grow and the first one didn't have any problem at all. I am using the same source of water and nutes. The tap water is pH 8.2, 320 ppm,then I add the nutes and citric acid to lower the pH and ends up with about 1000ppm. I don't understand what has gone wrong. Any suggestion what I can do? Will update with picture later today with photo. Thanks again for the reply.

 

[Trooperwife]

Day 52 - Vertical growth seems to have stopped but I can tell she is still growing. Gave her 2.2 L water + nutes today, pH5.6, 1300ppm. 200ml run-off, pH 7.4, 1600ppm! Those yellow leaves are very easy to pull off, seems like they are dead anyway. She is giving me a big headache, has been slow growth all alone but now those problems, I don't know what is the cause as my setup,nutes,water etc are all the same as my first grow, except the light.

 

[STILLSMOKIN]

Are you letting the tap water sit before mixing? Also what's temperature of water before feeding. Too cold and it causes problems.

 

[Trooperwife]

Are you letting the tap water sit before mixing? Also what's temperature of water before feeding. Too cold and it causes problems.

Thanks for the reply. I didn't let the tap water sit before mixing as my first grow was free of problem (I understand different strain may react differently but I don't have much experience so I copied what has worked last time to this one) and I thought it would be fine. The temperature was around 20 -22C, I didn't measure it every time.

 

[STILLSMOKIN]

Thanks for the reply. I didn't let the tap water sit before mixing as my first grow was free of problem (I understand different strain may react differently but I don't have much experience so I copied what has worked last time to this one) and I thought it would be fine. The temperature was around 20 -22C, I didn't measure it every time.

I would start letting tap sit for 24hrs then check ph on straight tap. Sometimes water companies have to add more chemicals to make water safer. So it will constantly change. But my tap comes out about the same and after 24hrs it is about 7.5 and 200ppm, 48hrs and tap is about 7.2 and 150ppm.

 

[Trooperwife]

I would start letting tap sit for 24hrs then check ph on straight tap. Sometimes water companies have to add more chemicals to make water safer. So it will constantly change. But my tap comes out about the same and after 24hrs it is about 7.5 and 200ppm, 48hrs and tap is about 7.2 and 150ppm.

Thanks again, I will give it a try and fill out a big bucket for future use.