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First Grow Journal

If things didn't turn around after backing off of the N that's exactly what I was going to do is flush her. A couple of people in that thread mentioned a P def which is what I was leaning towards because my ph was so low. The ppm dropped from 295 to 289 since last night to this morning so I don't think she's locked out. I am trying to find all the literature I can on nutrients so I can make better calls. I don't think it helps that this is an auto so it's a lot of guess work with the feeding schedule during the flowering switch and her being so sensitive is not helping my situation. If things don't turn around I'm going to do a 48hr flush and then cut out the Micro and run Bloom at 1/2tsp per gal and Grow at 1/4tsp per gallon. I read on GWE that they love K just as much as P during flowering so I want to keep Grow in the mix.
 
Aw, thanks agentb, but I really want to study how plant nutrition really works, what photosynthesis is and how they work together. Totally ignorant about that stuff. Damn, I wish that someone who uses your nutes would respond; and I wonder why the hell your pH is fluctuating so much. Gonna have to look that up. You could always PM Nebula if you really want the expert's advice; I've done it and she's really good about answering.
 
Well the ph isn't dropping since the res change. It was still in range at 6.4 when I left for work so I'm hoping it is still around that when I get home. If it is out of range again I will probably PM her. Can't hurt right? I bought Marijuana Horticulture by Jorge Cervantes and it's a little bit dated, but there is still A LOT of great information and full color high res photos galore. If you come across anything worth reading shoot it my way if you get a chance.
 
I had one person in another forum tell me that hydroguard caused his ph to fluctuate so he started adding 3% peroxide daily instead of beneficial bacteria. I had another person tell me that my smaller res was the culprit. And another person who was kind of hard to understand told me that My nutes were too strong and that was causing it...so I've gotten an array of information from different sources. I think my best bet is to keep riding it out and stick with your recommendation of a flush.
 
I just read this on Nebula's pH page:
  • For example, let's say you watered your plants with nutrient water adjusted to a pH of 6.0, yet the runoff water is coming out with a pH of 4.0. This often happens because there is nutrient/salt buildup around the roots (usually from adding too many nutrients over a period of time). You need to remove the buildup. A common way to remove salt buildup is to flush the plant with about 3x as much plain, pH'ed water as normal. Then go back to your normal feeding schedule (make sure you check the runoff pH again afterwards, to make sure that your flush worked).
So I don't think it's a P deficiency, cuz you have been feeding your plants well. I think it's lockout.

YOu and I are both DWC, but the principle is the same, and this may be why your pH is fluctuating so wildly.

And you should be sure what you're doing if you stop using Micro, which I think may not be the right thing. I'd say use them according to the ratio guidelines, but LOWER THE AMOUNT OF ALL OF THEM. I haven't been feeding my plants at even 50% of what they recommend (after I had nute lockout on Grow 4), and they seem to like it.
 
That all makes perfect sense. Nebulas recommended dose for week 7 is:
Micro:1tsp/gal
Grow:1/2tsp/gal
Bloom:1 1/2tsp/gal
calimagic: 1/2tsp/gal

So after a give her a good flush I think instead of cutting the Micro out I'll do:
Micro:1/8tsp/gal
Grow:1/4tsp/gal
Bloom:1/2tsp/gal
calimagic:1/2tsp/gal
hydroguard: 2ml/gal

I feel like with that low of a dose she will show me if she needs more of anything.
 
Just got home and she drank a hell of a lot of water today. PH is at 6.5 and the ppm has dropped to 198 from 295 last night so I think I'm in the clear for now. I added some PHd nute water which put the ph at 6.3 and the ppm at 230. I'm not going to stress her with another res change for now, but if stuff gets crazy again I'll flush her.
 
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Outside of the lower growth that got hit, I feel like she's starting to bounce back already.
 

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Coming up on the end of week 7. I did some more defoliation and LST this morning. Nebula was not kidding when she said auto strains have a very strong apical dominance. You can see the left side of her is staying higher. No matter how much I train it down, within a few hours it starts creeping back up. I'm going to be topping on my next run with this strain. I'm starting to see some shimmer on some of the leaves closest to the bud sites so that's exciting. I've dropped the light down to 15" and she seems to be responding very well.
 

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Agentbuckwold3 .......dude :D nice grow.......I'm subbed in for the rest too dude.....I have to say that I think your home A/C unit is pure genius mate and I hope you don't mind if I use the design?......please:) lol:)​​​​​​​
 
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