Indoor Jack Herer Auto rDWC

jER

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A little late start for this journal, I've been busy reading, searching and learning. This is might first time growing autos and first time growing Hydro as well. There's a lot to learn and I dont want to waste you guy's time with common questions google can answer.

My grow setup is as follows:

-4x Jack Herer Autos
-3'x3'×6.5' tent
-Mars II 800W LED (362W at the wall)
-rDWC with 4x 5gal buckets and control rez outside of tent. (System holds 40L total). 180GPH recirculation pump.
-Airstone in each bucket and 14L/min airpump (4 port)
-recently added 100L storage tank with its own circulation pump and 2 airstones.
-advanced nutrients ph perfect Micro/Grow/Bloom, Calmag, voodoo juice. Lots of Ph down (I have really hard water, out of the tap at ph 8.5 and 250ppm)
-carbon filter, ventilation, etc...

Some of you know a bit about my grow from some great help and advice offered by some awesome guys over in the infirmary. Thanks again!

So I started this grow at the beginning of December (seeds broke ground, or rather rockwool, Dec 5th). The first couple weeks were really slow, I think I made the mistake of watering them with 0ppm bottled water and since the rockwool has no nutrients or trace elements they were off to a slow start.
Here they are at 1 week:
20181212_223256_HDR.jpg
I also had left the little dome on this seedling tray on a little too long, the heating mat it was on caused too much condesation and the cubes started to smell a little sour, I got some fresh air to em and they pulled through.
In hindsight, I should have got em in the hydrotron and a bit of feed sooner, but here they are planted on dec 16.
20181216_233422_HDR.jpg
Still on water only, they took a few days for the roots to hit the water then things started to pick up.
Dec 22nd:
20181222_110112.jpg
Apperantly this netpot is not full enough with hydrotron. I wanted to keep the cube visible while hand watering to make sure it wasn't drying out or soaking wet. I guess there were some small light leaks around the top holes of the netpot which resulted in a algea bloom that completely clogged all 4 airstones in the next couple days. I managed to get on top off it quick and after some a late night emergency water change, a good scrub down and some h202 I got it cleaned up with no obvious adverse effects other than a bit of droopyness and some stained roots (Made me panic thinking I had rot but its just dead algea)
20190102_224419.jpg

Dec 30th:
20181230_232258_HDR.jpg
I have one pheno that has a little broader leaves and the new growth kept coming in super yellow like an iron deficiency, but it greened up a lot when I increased the nute strength. The other three are more similar phenotypes except one is a bit of a mutant (early leaves duckfooted and some two leaf fans. It has grown out of most of that but is still growing kind of scraggly compared to the others.
The yellow one "blondie" is much hungrier than the other three as their tips are starting to burn slightly but she is still asking for more.
Jan 1st:
20190101_105317.jpg
I did some LST on two of them to experiment, and bent and tied the main stem over. They both responded well to it. I should have done the other two as well as it opened up the plant nicely.
20190102_225425_HDR.jpg

These girls are the bushiest plants I've ever seen, their fans are literally stacked on top of each other. I am now having to do some defoliation to let them breath as the leaves are wet from laying on each other.
Jan 5th:
20190105_173329.jpg
Jan 8th:
20190108_213044.jpg
Jan 10th:
20190110_213247.jpg
Growing like weeds...
Jan 12:
20190112_124955.jpg

Which brings me finally up to date. The girls are starting flower and growth has been exploding!

Jan 13th:
20190113_173536.jpg 20190112_225908.jpg

I am going to do some more defoliation to try to get some more air movement over the next few days as the small tent is filling up fast! We'll see how they do, I was almost ready to scrap them and start over due to the slow start but now they are looking like they might do alright.

My biggest concern right now is that I have to go to texas for work for possibly a couple weeks at the end of this month and I need to get things smooth enough that my wife can tend to it in my absence...
 
Hey man excellent job!! I wish I could run a 4 pot RDWC :) everything looks wonderful


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Thanks Clyde, this is my first time running rDWC and I think its great. It is definately a bit finicky, when things go south they do so in a hurry, but problems can also be fixed quickly as well if you are on top of it. It is really nice to have the control bucket outside the tent where you can mix nutrients and check levels and Ph without digging around in the tent.
The biggest issue I have had is keeping my water Ph stable. We have really hard water over here in Alberta. Mine comes out of the tap at around 8.5Ph and 250ppm (according to the city report, I have yet to get a tds meter). Even with the Ph Perfect nutrients the buffers are only able to bring the Ph down to around 7. Which I think has them pretty much saturated. My problem kept being that after I mixed the nutrients and adjusted the Ph down to 5.5, it would stay stable until I sent the solution to the buckets. Once the airstones were bubbling the solution the Ph would rise back up overnight to around 7-7.5.
The solution I found worked best was to add a large water storage tank made of a 100L tote with a pump to keep the solution mixed and a couple airstones to pre-bubble the water and get it stable before mixing the nutrients.
So what I do now is fill the tote with 40L water and some Cal-mag and let it bubble for a day, then I adjust the Ph down and let it bubble for another day adjusting as needed to keep it around 6 to leave room for the nutes to drop it a little further. I think what is happening is as CO2 is bubbled through the water with the acid the bicarbonates in the hard water are precipitating out of solution as either calcium carbonate or phosphate (not sure which, I'm no chemist) and the Ph rises (if I add the Ph down too fast the water turns really cloudy).
I then add my nutrients and bubble that for a day to make sure is is stable before doing my weekly water change. I exchange 30L of the 40L in the system and top the storage tank back up to 40L leaving the storage tank solution at 1/4 strength for top ups.
This has been working awesome for the last couple weeks and my Ph in the rDWC system has been staying rock solid in the mid 5's for the whole week.
Now I just need to add some float switches and a solinoid valve to auto top up the system from the storage tank and it should be able to run at least a week unattended.
 
hydro and first time grower dont mix to well.so hats off you doin great :toke:
:pighug:
 
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A little late start for this journal, I've been busy reading, searching and learning. This is might first time growing autos and first time growing Hydro as well. There's a lot to learn and I dont want to waste you guy's time with common questions google can answer.

My grow setup is as follows:

-4x Jack Herer Autos
-3'x3'×6.5' tent
-Mars II 800W LED (362W at the wall)
-rDWC with 4x 5gal buckets and control rez outside of tent. (System holds 40L total). 180GPH recirculation pump.
-Airstone in each bucket and 14L/min airpump (4 port)
-recently added 100L storage tank with its own circulation pump and 2 airstones.
-advanced nutrients ph perfect Micro/Grow/Bloom, Calmag, voodoo juice. Lots of Ph down (I have really hard water, out of the tap at ph 8.5 and 250ppm)
-carbon filter, ventilation, etc...

Some of you know a bit about my grow from some great help and advice offered by some awesome guys over in the infirmary. Thanks again!

So I started this grow at the beginning of December (seeds broke ground, or rather rockwool, Dec 5th). The first couple weeks were really slow, I think I made the mistake of watering them with 0ppm bottled water and since the rockwool has no nutrients or trace elements they were off to a slow start.
Here they are at 1 week:
View attachment 1000738
I also had left the little dome on this seedling tray on a little too long, the heating mat it was on caused too much condesation and the cubes started to smell a little sour, I got some fresh air to em and they pulled through.
In hindsight, I should have got em in the hydrotron and a bit of feed sooner, but here they are planted on dec 16.
View attachment 1000739
Still on water only, they took a few days for the roots to hit the water then things started to pick up.
Dec 22nd:
View attachment 1000740
Apperantly this netpot is not full enough with hydrotron. I wanted to keep the cube visible while hand watering to make sure it wasn't drying out or soaking wet. I guess there were some small light leaks around the top holes of the netpot which resulted in a algea bloom that completely clogged all 4 airstones in the next couple days. I managed to get on top off it quick and after some a late night emergency water change, a good scrub down and some h202 I got it cleaned up with no obvious adverse effects other than a bit of droopyness and some stained roots (Made me panic thinking I had rot but its just dead algea)
View attachment 1000754

Dec 30th:
View attachment 1000745
I have one pheno that has a little broader leaves and the new growth kept coming in super yellow like an iron deficiency, but it greened up a lot when I increased the nute strength. The other three are more similar phenotypes except one is a bit of a mutant (early leaves duckfooted and some two leaf fans. It has grown out of most of that but is still growing kind of scraggly compared to the others.
The yellow one "blondie" is much hungrier than the other three as their tips are starting to burn slightly but she is still asking for more.
Jan 1st:
View attachment 1000755
I did some LST on two of them to experiment, and bent and tied the main stem over. They both responded well to it. I should have done the other two as well as it opened up the plant nicely.
View attachment 1000756

These girls are the bushiest plants I've ever seen, their fans are literally stacked on top of each other. I am now having to do some defoliation to let them breath as the leaves are wet from laying on each other.
Jan 5th:
View attachment 1000757
Jan 8th:
View attachment 1000758
Jan 10th:
View attachment 1000759
Growing like weeds...
Jan 12:
View attachment 1000760

Which brings me finally up to date. The girls are starting flower and growth has been exploding!

Jan 13th:
View attachment 1000761 View attachment 1000762

I am going to do some more defoliation to try to get some more air movement over the next few days as the small tent is filling up fast! We'll see how they do, I was almost ready to scrap them and start over due to the slow start but now they are looking like they might do alright.

My biggest concern right now is that I have to go to texas for work for possibly a couple weeks at the end of this month and I need to get things smooth enough that my wife can tend to it in my absence...

Nice recovery. Those look great now. Can't even tell there were issues.
 
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One question I havent been able to find an answer to is if you are going to prune fan leaves, do you want to cut the leaf's stem as close to the node as possible? Or leave a bit of stem so the node or new shoot doesnt dry out? does it matter?
 
One question I havent been able to find an answer to is if you are going to prune fan leaves, do you want to cut the leaf's stem as close to the node as possible? Or leave a bit of stem so the node or new shoot doesnt dry out? does it matter?

I was told to cut them off and leave the stem on the plant. At least for fans that are on a bud. Otherwise you can get juice from the cut on your bud and then possibly bud rot from that.
 
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I think you'll get the best result from that Mars light by selecting the best two Jacks, and just aiming to fill a 2.5 x 3.5 space at most. I just got over 9oz from one plant under a similar light in a 2 x 3 scrog. It will be much less work and stress plus you get the benefit of starting with four plants by picking the best one or two. By. trying to grow more you'll end up growing less especially seeing as they're all the same strain.
 
Member420,
You may be right, 4 plants in a 3'x3' can tight as I am discovering. I did stunt them pretty good in the beginning and wasn't expecting much from them, but if they keep up this pace they might overgrow the tent. I don't know I have the heart to cut down two healthy and vigourously growing girls right now, I'll probably wait and see what trouble I can get myself into. I may heed that advice on the next round though. Since my buckets are all hard plumbed together it doesn't make it easy to center two plants nicely in the tent, although I could easily re-configure the piping for the next go. Would be wise as I want to mainly grow sativa dominant plants.
I love indicas and the whole range between too, but I find I am the most picky when it comes to my daytime smoke. Any indica that can relax me and help me sleep will suffice but a good sativa for daytime use is harder to find.
 
Looks great, and you recovered from your initial post in the "infirmary" thread that I just saw now.
For defoliation make sure you don't leave any stumps, sticks or petioles on the stem. Cut them right back, rot gets in that way fast if anything is left poking out.
If you haven't gotten a TDS or pH meter I had pretty good luck with HM brand off Amazon, PH-80 and COM-80. Got a Bluelab for Xmas but when I compared them after a year + of use the accuracy was pretty damn good. Just slow and I had to calibrate the pH meter often.
Good luck and I'll see how things progress :toke:
 
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