New Grower 1st grow - 24x24x55 - autocob

[thedailydose]

Sounds good! Lots of confusion with pro mix with so many different types etc has to be confusing for a beginner.

yea it was! but i wasnt the only one asking so that made it easier to find the answer.

just goind to drop some quotes i collected regarding promix (for anyone researching answers!):

I've done a lot more experimenting with the pH of Pro Mix since I wrote that. I did find anything below 6 didn't work very well. 6.2 to 6.6 seems to be the best range. I'm now adding 4 grams of 17% aluminum sulfate per gallon of Pro Mix and feeding at 6.5. My pH drops to 6.2 the day after feeding and slowly goes back up to about 6.6 as the plants dry out. This is allowing the plants to cycle through the desired pH range and my results have improved but more importantly, the pH has remained stable.

Pro Mix is all I use for all my growing. According to the manufacturer, Premier Horticulture, Pro Mix is considered semi soil less. Not a true soil less medium like coco, but not a soil medium either. In my experience, plants grown in Pro Mix do best with a pH of around 6.2 - 6.3. I've tried running as low as 5.8 but got better results with the slightly higher pH. Since Pro Mix only contains starter nutes, it's up to you to supply all the nutrients for the plants. I generally find that the starter nutes are exhausted within the first two weeks, so usually start mild, 1/4 strength feedings around day 12 - 15. I've got some seedlings right now that just popped and I'm planning on giving them nutes even earlier this grow, on their first watering which is usually around day 6 or 7. I want to see what difference, if any it makes.

Plants grown in Pro Mix also tend to show a cal/mag deficiency around week 5-6, and a P deficiency in mid to late flowering. It's not a bad idea to keep a bottle of cal/mag supplement and something like PK13.14 on hand should those deficiencies arise.

I've revised my pH numbers up a bit with Pro Mix. Now I try to maintain around 6.3 - 6.4. I was getting lockout on some strains at 5.9 and 6. I like HP for LEDs, CFLs and T5s, BX for HPS. BX holds a bit more moisture and tends to stay too wet under low heat lights. The only exception is if you're using Air Pots. HP tends to dry out too quickly, even under low heat lights, so I'd recommend BX for air pots. The starting pH of Pro Mix is usually about 7 right out of the bag. I've done a lot of experimenting to lower the starting pH and have found 17% aluminum sulfate to be the most effective. At the rate of 4 grams per gallon of mix it lowers the pH to around 6.3 when measured the day after feeding, slowing rising to about 6.6 as the soil dried out.

This question is for all growers using Promix. What pH do you adjust your feeding/watering to? Since it's a soiless mix, I always thougth the hydro pH should be used 5.8. I bought a bottle of AN Iguana Juice bloom and I emailed AN asking does it need to be pH adjusted if so what pH do they recommend. I made clear that I was growing soiless with Promix HP. They wrote back and said pH adjust feedings/watering to 6.3. Being curious I wrote back and asked why 6.3 and not 5.8 since Promix is soiless.

"Promix HP, while a soilless semi hydro type medium, actually requires the pH of a soil watering.

You want to be adjusting feedings and watering to a pH of 6.3."

So it just puzzles me really, on how there's so much mixed up info about pH.

 

[thedailydose]

update!


DAY 49

DAY 50

DAY 51

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- dropped the lights to @ 22'' from the plant on day 49
- no signs of heat stress/taco like leaves so it will stay @ 22" for now

- GSC seems to be bouncing back from the nute lockout/deficiency
- no new leaves getting sick / old leaves are staying the same!
- have been slowly removing the damaged leaves starting from the bottom to help the plant focus the energy on producing buds instead of repairing leaves

- will keep my eye out on GSC until i get a proper slurry test and or a soil probe


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[thedailydose]

update


DAY 52

DAY 53

DAY 54: WATER DAY / 19th FEEDING

DAY 55

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19th feed GH TRIO

3gallon mix (upped the cal mag to 4ml/gallon)

- 12ml cal mag (4ml/g)
- 6ml micro (2ml/g)
- 1.5ml gro (.5ml/g)
- 6ml bloom (2ml/g)
- 2.5ml ph down

- ph @ 6.40 (yellow pen)
- ph @ 6.46 (apera pen)
- ph around 6.0-6.5 (vial)

- each plant got 1.5gal of water (with run off) / 1quart @ 10mins interval

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- lights still @ 22" from the plants
- no new sick leaves on GSC
heres the link to the infirmary for the sickness! (slurry test included)
https://www.autoflower.org/threads/nute-lockout-cal-mag-phosphorus.71821/


- decided to do some LST adjustment on both plants to maximize light penetration
- SC is looking good!! just waiting on 30x/60x scope so i can check trichomes

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[thedailydose]

update

DAY 56: END OF WEEK 8!

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[baked in the bluegrass]

Dammit man I see these pics and i wanna reach right through the screen and smoke them buds lol.
Lookin good yo!

 

[thedailydose]

test upload

SC DAY 58 trichome check:









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mostly clear/cloudy with spots of amber all in different buds

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i guess im limited to 5 outside pics when being host by imgur? anyone know the best way to upload from pc to this site?

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edit: just cleaning up the test upload pics

 

[baked in the bluegrass]

test upload

Doesnt appear to be a pic there

 

[thedailydose]

Doesnt appear to be a pic there

thanks @baked in the bluegrass ! trying to figure out how to upload pics from pc to site.

been using tapatalk with the phone (just clik and post)

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test continues

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edit: just cleaning up uploaded test pics / broken codes

 

[baked in the bluegrass]

Ive done one pic from a laptop here at the house, im with you normally do everything from the phone

 

[baked in the bluegrass]

Now theres a sexy pic up there!