Seed Stockers Seed Stockers Sampler

[4d-Rock]

Happy New years everyone!
It’s been a busy holiday and a bit since ive updated the thread on the progress.

The growth has been pretty good, some of the fastest I’ve done, at least the BCN and PP, SLH is still a node behind.
They all had their first full pot soak with 2g/gal MegaCrop, 6.2pH at day 13.

They grew enough by day 16 that I topped the BCN and PP between the 5th and 6th nodes. The SLH I decided to top the same day but between the 4th/5th nodes.

After the full soak the pots sure took some time to need to be watered again. I waited about 6 days and even then the pots still seemed relatively heavy. I also noticed that some leaves were getting lighter so figured I would do another weak feed.

So on day 19 they all received 4L of 2g/gal MC,350ppm/ 6.3 pH. There was maybe 10% runoff and I checked the ppms coming out which was surprising. I was getting readings from 1000-2000ppm! Im guessing buildup on the fabric may be partly to blame but still I’m surprised that it’s that high with only one feeding.
Anyone have and insight or suggestions on this? My current plan is to do a plain water next and shoot for maybe 20%runoff.

Here They are at Day 20

For an extra piece of the puzzle, I did a check of the soil pH with my Apera soil probe and all measured between 5.7-5.9. Seems reasonable but I have been watering at 6.1-6.4pH. Should I be changing anything or keep monitoring the situation?
Previous grows I’ve ran into lockouts by transition and I’m starting to wonder if plummeting soil pH may be the culprit.

 

[Boognelson87]

Happy New years everyone!
It’s been a busy holiday and a bit since ive updated the thread on the progress.

The growth has been pretty good, some of the fastest I’ve done, at least the BCN and PP, SLH is still a node behind.
They all had their first full pot soak with 2g/gal MegaCrop, 6.2pH at day 13.
View attachment 1272650
They grew enough by day 16 that I topped the BCN and PP between the 5th and 6th nodes. The SLH I decided to top the same day but between the 4th/5th nodes.

View attachment 1272653

After the full soak the pots sure took some time to need to be watered again. I waited about 6 days and even then the pots still seemed relatively heavy. I also noticed that some leaves were getting lighter so figured I would do another weak feed.

So on day 19 they all received 4L of 2g/gal MC,350ppm/ 6.3 pH. There was maybe 10% runoff and I checked the ppms coming out which was surprising. I was getting readings from 1000-2000ppm! Im guessing buildup on the fabric may be partly to blame but still I’m surprised that it’s that high with only one feeding.
Anyone have and insight or suggestions on this? My current plan is to do a plain water next and shoot for maybe 20%runoff.

Here They are at Day 20
View attachment 1272894

For an extra piece of the puzzle, I did a check of the soil pH with my Apera soil probe and all measured between 5.7-5.9. Seems reasonable but I have been watering at 6.1-6.4pH. Should I be changing anything or keep monitoring the situation?
Previous grows I’ve ran into lockouts by transition and I’m starting to wonder if plummeting soil pH may be the culprit.

Hey happy new year. Nice growth at 2 weeks for topping. I'm having a similar issue for drying. Like you my temps are about 75 Fahrenheit at that level but the floor is mid 60s. What's your floor temp? Unsure about ppms coming out when I did that it always seemed higher. Crucial time to get it right tho

 

[4d-Rock]

Thanks @Boognelson87. The floor temp is 2C or so cooler than the plant level, so not too bad. I have the tent on some old ceiling tiles to insulate it from the cement floor.

I’m trying to figure out what the best option would be so that the medium dries faster, or the plant drinks faster.
It got me thinking, what would be better...
Dropping the RH in the tent so theoretically the pots dry quicker, but in that case it messes up the VPD and the plant may not grow as well, thus not drinking as much..or...
Keep the RH up or increasing it to be in the best VPD range as possible. The pot may stay moist due to the humidity, but the plant should be healthier and thus drink more?
Maybe @Mañ'O'Green can drop in with some of his wisdom on the subject?

As for the ppm problem, one of the pots getting some salt buildup on the sides. Also, the SLH is showing some tip clawing from some N toxicity on some new leaves, and on one leaf of the PP. So there’s definitely some built up nutrients in the soil, I’m still baffled on how that happens with only a mild pre-charge and two feedings. But hopefully it’s not too far progressed that I can steer it back on track.

Should I wait til the 40% water capacity range? With it taking as long as it has to lighten it may exacerbate the excess nutrient issue. Or should I maybe give it a day or two and then give it a plain watering with a reasonable 20% runoff?

 

[4d-Rock]

Here’s a couple pics To follow up. I trimmed the top node fan leaves on the PP and BCN, just tucked them in the shorty SLH.
Day 21 - thinking in the next couple days I will start some LST

N clawing on SLH

Buildup on outside of BCN pot

I’ve noticed a bit of algae growth on all the soil, more than I usually see. Not sure if it’s due to the higher RH I’ve been trying to maintain, or that these pots sat in my garden shed for a while uncovered prior to their use.

 

[hope2grow]

An option would be to not water to run off until their roots have filled the pots m8.. I water small amounts increasing as the plants grow until around week 3 when I'll start watering to run off.. I start at 100ml per day for seedlings so they all get watered every day wet dry cycle..increasing as the plants grow.. ive never seen the point in watering a tiny seedling to run off in a huge pot.. like u say.. it takes forever to dry out again and I cant see how it makes the roots do much work looking for water as they're drowning in it.. but that's just my personal view of course. It works for me. Plants look great keep up the good work.

 

[4d-Rock]

An option would be to not water to run off until their roots have filled the pots m8.. I water small amounts increasing as the plants grow until around week 3 when I'll start watering to run off.. I start at 100ml per day for seedlings so they all get watered every day wet dry cycle..increasing as the plants grow.. ive never seen the point in watering a tiny seedling to run off in a huge pot.. like u say.. it takes forever to dry out again and I cant see how it makes the roots do much work looking for water as they're drowning in it.. but that's just my personal view of course. It works for me. Plants look great keep up the good work.

Thanks for the tips! I had done small 100ml waterings, scaling up to 1000ml for the first two weeks, and Day 13 is probably the earliest I’ve done full pot watering. I tried this based on some reading that the seedlings root up relatively fast, and if you’ve got air pockets or dry soil it could stop some of the early growth and impact future potential.
Maybe it was a touch early, but I also don’t typically use 3 gallon pots either. Usually I’m growing in 2 gallons that dry out quicker. So it’s gonna be a few grows at this size to dial it in.

On another note, I find it interesting the different structure of each strain.
The PP is a fair amount taller, and more open branching.
The SLH is quite squat and has been reaching out further laterally.
And the BCN is in between the two for height but has had really nice and dense leaf growth and development of the lower nodes.

 

[Boognelson87]

Thanks for the tips! I had done small 100ml waterings, scaling up to 1000ml for the first two weeks, and Day 13 is probably the earliest I’ve done full pot watering. I tried this based on some reading that the seedlings root up relatively fast, and if you’ve got air pockets or dry soil it could stop some of the early growth and impact future potential.
Maybe it was a touch early, but I also don’t typically use 3 gallon pots either. Usually I’m growing in 2 gallons that dry out quicker. So it’s gonna be a few grows at this size to dial it in.

On another note, I find it interesting the different structure of each strain.
The PP is a fair amount taller, and more open branching.
The SLH is quite squat and has been reaching out further laterally.
And the BCN is in between the two for height but has had really nice and dense leaf growth and development of the lower nodes.

What medium are you in? 3 gallons pro mix for me dont see full pot saturation til days 24-28 usually. Wonder if that's the culprit

 

[4d-Rock]

What medium are you in? 3 gallons pro mix for me dont see full pot saturation til days 24-28 usually. Wonder if that's the culprit

Ahhh, ya, I'm also using the Pro-Mix HP. I probably jumped the gun on it then. So....turn the fans all on high then to dry those suckers out?

They don't seem to be that affected by the early heavy watering, not droopy or sad looking due to overwatering. I'm more worried about the high ppms in the runoff and the low soil pH (5.7-5.9) comparatively to the higher pH input (6.1-6.4). Or maybe I'm over thinking things again....

 

[4d-Rock]

Well, I think it’s about time to get started on some LST. The side branches have started to get some length to work with.

Day 23

I started with 4L of plain water per pot (60ppm/6.5ph). I’m still getting some pretty high runoffs ranging from 500-1200 ppm. Mostly around 1000. Each of them are getting minor burnt tips so I’m thinking it may require another plain watering to get the nutrient concentration down in the soil. Or should I be giving more of a weak solution to flush it out but keep some of the nutrient balance in there? or is that going to add to the issue?

That day I also did the first tie downs. The PP is a fair amount taller and more lanky then the other two, it’s going to spread out quite a bit, hopefully the leaves dense up rather than be super stretched.

Here they are two days later on Day 25

I’ve been checking in and making the small adjustments to try to level out the canopies. A bit difficult with the PP being a good 4-6 inches taller than the other two. But we’ll see how they stretch. Overall I think They are looking pretty good, other than the slightly progressing nute burn on the tips which I’m hoping slows or stops with the next watering.

 

[Boognelson87]

Well, I think it’s about time to get started on some LST. The side branches have started to get some length to work with.

Day 23
View attachment 1274628
I started with 4L of plain water per pot (60ppm/6.5ph). I’m still getting some pretty high runoffs ranging from 500-1200 ppm. Mostly around 1000. Each of them are getting minor burnt tips so I’m thinking it may require another plain watering to get the nutrient concentration down in the soil. Or should I be giving more of a weak solution to flush it out but keep some of the nutrient balance in there? or is that going to add to the issue?

That day I also did the first tie downs. The PP is a fair amount taller and more lanky then the other two, it’s going to spread out quite a bit, hopefully the leaves dense up rather than be super stretched.

Here they are two days later on Day 25
View attachment 1274629

I’ve been checking in and making the small adjustments to try to level out the canopies. A bit difficult with the PP being a good 4-6 inches taller than the other two. But we’ll see how they stretch. Overall I think They are looking pretty good, other than the slightly progressing nute burn on the tips which I’m hoping slows or stops with the next watering.

looking good! nice branching and gonna have a good amount of tops