Polar Gelato Seed Run

Shane Karmann

Old Tricks New Dog
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Thread author welcomes replies: Yes
This has been a long time coming with a false start here and there. I've been growing Polar Gelato for almost 2 years now and it remains my favorite smoke and I get how it grows and how to fill a tent with it. My first runs were 8 plants in a 4x4 tent (or two) and I've since learned I can make the same yield from four plants in the same space with healthier plants and less drama and fuss. I still make way too many clones whenever I make them. Anyway, I was running out of seeds and didn't want to lose the strain, so making seeds makes more sense or seems more fun than ordering more. I planted 6, 3 of them cracked on June 15. I also started 5 Apple Banana S1s from @Senokai at the same time. I started to flower those on June 29, one is finished way early, the others have a few weeks to go but that's for another post.

As the PG vegged I quickly started seeing problems; twisty leaves and brown spots on yellowing leaves, but only on 3 plants, the Polar Gelato. I went through a lot of triage and consultation, trying to understand my problem. 8 plants, all in identical conditions, drinking from the same reservoir on the same schedule, same lights, same fans, same exterior climate. Really a puzzler. I had repotted a quite small Gorilla Frost clone barely rooted and it started pushing past the 3 by now largeish plants while displaying perfect health, lovely leaves, etc. @Laughing Grass suggested that it might be from running too low a pH for Promix, something she had learned in discussion with another user here. I always knock a new res down to 5.8 and let it drift upward until the res is consumed. It doesn't go very high, maybe 6.2 But this didn't really improve my foliage and new leaves would eventually start to look shitty as well. So I alwent back to the specific issue of what medium I was using. The Polar Gelato differed in only one respect and that is they were in Sunshine Mix #4, not Promix HP. so I decided on a radical solution. I would repot these, by the, quite large plants, remove all the medium from the root balls and repot in fresh Promix. On August 1, I removed most of the roots and most of the tops. Cut them in half, removed all the shitty leaves and back in the same pots they went. The transformation was breathtakingly fast. 72 hours and fresh vibrant leaves were popping out. For science I decided to leave one untouched for comparison and that became my chosen target for STS reversal. I was convinced that Sunshine #4 and Promix were interchangeable but something was going on here, and I needed to do some research. I quickly discovered there is such a thing as Sunshine Mix #4 PROFESSIONAL, which is designed for high drainage applications like DTW. I did not have the professional, indeed I did not know it exists and as I continued to observe, during a fertigation interval, when every other 3 gallon pots began to run off, the one I didn't repot never had runoff. Regular Sunshine #4 is not the same as Promix HP in this critical regard. The two plants Irepotted in Promix quickly caught up and 3 weeks later look like some of the finest plants I've ever vegged. It was quite irritating that this project which was supposed to be all about making seeds turned into a troubleshooting exercise, but life is for learning.

One benefit is it gave me plenty of time to reverse the chosen plant and after a number of treatments I now have decidedly male preflowers forming. I flipped the whole tent to flower one week ago on August 14. Originally I had an extra Apple Banana in there but it really wasn't a healthy genetic specimen and I replaced it with a Gorilla Frost clone that quickly caught up while I was dealing with the foregoing matter. so my PG seed project also encompasses crossing it with the Gorilla Frost, another Sherbinski creation, because why not.
 
Happy to have you. I'm working on my illustrations! Here's a plot spoiler:

"It's a boy, Mrs. Walker, it's a boy."
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so do you think your problems were because of poor drainage or something else?
I am concerned because I am using sunshine mix#4 but I add quite a bit of perlite to improve the drainage. I haven't noticed any problems yet.
I saw your comment the other day and meant to include it here. You added perlite and that makes a difference. Also, I water to runoff emphatically because in automation underwatering is the worst. You're a more traditional waterer.
 
A bit after repotting they really caught fire.View attachment 7761View attachment 7763View attachment 7764View attachment 7765
The left hand one remained unrepotted and continued to be a whiney butt poopy pants.
Whiney butt poopy pants have nice new growth which is the main thing.
Bottom leaves: i have to start by saying im not a plant def expert, but theres one thing i would suggest on those:
Looks like K def or maybe even more likely: high Ca or mg locking K out, they are antagonists iirc: yellowing and necrosis from the tips. In any case whatever it was its over now:)
 
from the root pictures it looks like one root ball was definitely too wet, the other looked root bound.

from the root pictures it looks like one root ball was definitely too wet, the other looked root bound.
That's the same plant. Too wet, yes, but not rootbound, that's how plants grow in floraflex pots. The entire pot bottom is open lattice. The second picture is with all those roots and the attached medium cut away, leaving less than the original transplant had. After transplant, roots grow straight down until they hit the bottom of the pot, then they spread outward to the sides of the pot, then up the sides. It will be interesting to see how they regrew, I expect they will look similar. That design, filled with a freely draining medium, pulls air into the medium as it drains, the open bottom won't retain runoff, it's even up on little feet so the bottom doesn't touch anything.
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Awesome. I really miss PG. it was @xox who was giving me the straight dope on promix.

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lol yes i use promix. some of my take aways are this. depending on where the peat is harvested sometimes determines how acidic it is. also its likely mixed using a conveyor belt in a factory i suspect this isnt very accurate for making sure the ph is always correct. the other thing is as peat breaks down it gets more acidic. if your watering peat and seeing too much run off you'll lose more dolomite lime which balances the ph of the peat. watering like that will cause your ph to drop over time. you'll then see calcium / magnesium deficiencies first. i find when growing large plants i always have to add more dolomite to the mix to counteract this problem. i generally add 1 cup of dolomite per 5 gallons of media. seems to work much better. im not an expert on the subject but thats my take on it. i use this media because its easy for me to get without having to pay freight not because i think its the best lol.
 
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lol yes i use promix. some of my take aways are this. depending on where the peat is harvested sometimes determines how acidic it is. also its likely mixed using a conveyor belt in a factory i suspect this isnt very accurate for making sure the ph is always correct. the other thing is as peat breaks down it gets more acidic. if your watering peat and seeing too much run off you'll lose more dolomite lime which balances the ph of the peat. watering like that will cause your ph to drop over time. you'll then see calcium / magnesium deficiencies first. i find when growing large plants i always have to add more dolomite to the mix to counteract this problem. i generally add 1 cup of dolomite per 5 gallons of media. seems to work much better. im not an expert on the subject but thats my take on it. i use this media because its easy for me to get without having to pay freight not because i think its the best lol.

That was exactly the issue I was having with peat. Treating it like DTW coco, hitting it with large amounts of calmag and still seeing deficiencies.
 
This makes incredibly good sense. I am an eager recycler of promix, removing plant matter and reusing in subsequent grows. The lime would tend to wash out over time. Unlike you I keep continuous tabs on my water parameters. I usually set my res at 5.8 when I fill it and it drifts upward over time. LG suggested I test my runoff as well and there was little difference. I never test runoff and was surprised at how little it changed.
 
This makes incredibly good sense. I am an eager recycler of promix, removing plant matter and reusing in subsequent grows. The lime would tend to wash out over time. Unlike you I keep continuous tabs on my water parameters. I usually set my res at 5.8 when I fill it and it drifts upward over time. LG suggested I test my runoff as well and there was little difference. I never test runoff and was surprised at how little it changed.

i used to recycle it but not for indoor i would often bag everything and bring it out to my shed. then in the spring i would break all of the stuff down and add it to my garden beds for my vegetable garden. however my wife complained about having to help with the vegetables so i didnt plant anything this year. now the shoe is on the other foot and now she misses the fresh vegetables so were back on for next year lol.
 
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