Seed Stockers Seed Stockers Sampler

[GeorgeCloney]

Alright On day 27 I settled on watering each 5L with 2g/gal (350 total ppm, 6.3pH) which gave a pretty reasonable amount of runoff. By the end of which each had runoffs in the range of 400-500ppm.
I also continued LST and trimmed some of the inner fan leaves on the more dense SLH and BCN.
View attachment 1275617
Here’s what the look like today on Day 28. Not to shabby, they are nicely progressing so I’ll keep an eye on them and keep things steady
View attachment 1275616

Looks like you're doin a great job 4D.
I've been growing with MC ver1 for about 2 years now.
About 80 plants of experience with the stuff.
I still on ocassion get the odd ball pheno that gets tip burn.
I saver her for last, and just dilute my feed to a lower ppm.
I've also had better success using MC at 500ppm + 100ppm SC going into flower.
if not ,I would increase the MC to 550-580.
The issue is rarely ppm with MC.
It's PH being too low.

 

[4d-Rock]

Looks like you're doin a great job 4D.
I've been growing with MC ver1 for about 2 years now.
About 80 plants of experience with the stuff.
I still on ocassion get the odd ball pheno that gets tip burn.
I saver her for last, and just dilute my feed to a lower ppm.
I've also had better success using MC at 500ppm + 100ppm SC going into flower.
if not ,I would increase the MC to 550-580.
The issue is rarely ppm with MC.
It's PH being too low.

Thanks @GeorgeCloney !
I think pH may be a key component to previous grow's going downhill (that and overfeeding since the low pH prevented the plants from uptaking as much). The peat in the Pro-mix seems to just continuously drop the pH and I'm not sure if the dolomitic lime that they add is enough to buffer throughout the entirety of the grow. Since buying a good soil probe I've been able to measure it with more confidence and the last couple grows by the transition to flower the soil pH has been far too low, like 5-5.6 range. That was with all of my feed/water being around 5.8-6.0, where this grow I've kept my inputs at the higher 6.0-6.4 range and so far so good on my soil measurements. I'll keep an eye on it.

The plan will be to do a plain watering next, followed by a bump up in MC strength to around 400-500ppm range. I do have Sweet Candy (1st version) but I've opted out on this grow to keep things simple as I'm trying to dial it in. I may still add some Bud Explosion in mid-end flower.

The LST has been going well and I have the nodes spaced out reasonably enough that I'll probably just let them grow up from here. Should have a week or two left of stretch. Currently still using the SP150 (135w for 22w/sq ft) at about 20-24" from tops. I Keep considering adding in a 55w COB but I don't want to make too many changes if things are going well. I do have a 2x4 Mars Hydro tent in the mail which should arrive any day. I may end up moving these over to that tent for the extra space and add in my 135W HLG QB288 3000K quantum board, but we'll see how things go.

 

[Boognelson87]

looking good for 4 weeks.listening to you and @pop22 I'm wondering if my need for cal mag early is just from.underfeeding megacrop. You guys give 2 g/gal where I give 1g. Maybe it causes me to play catchup. I want to experiment now lol kinda like you did when DM me. Grats on the new tent too. Will you be using both then?

 

[4d-Rock]

Ya I dunno, I’m far from confident that my methods and strengths are the best way to go. But gotta keep on trying right?
I know that I’ve continuously read around the forums about the troubles caused by excess Ca so I’ve opted for leaving it alone unless I see specific issues that I can’t explain by other potential causes like pH or lockout.

I’m not sure yet how I’m going to juggle the two tents. Up until now, I have been completing a grow and then using the tent for hang drying. It tends to make for slower cycles so what I may end up doing is using the smaller tent for Veg with the SP150, then finish them off in the bigger tent with the QB288 and a couple of the COB lights. It should allow for less time between harvests but we’ll see how much space my wife will allow me to take up.

 

[4d-Rock]

Alright guys, I’m starting to have flashbacks. It’s about the time in most of my previous grows where sh!t hits the fan and starts spiraling.

Today is watering day and I’m having trouble deciding what to do. My original plan was to continue alternating feed and plain water, where tonight would be back to plain water.
Except...I’m noticing some oddities in two of the plants that I’m unsure if I should stick with the plan or react.

Here’s what they look like right now (Day 31)

The BCN a looks a bit droopy, maybe because it needs a watering bit it’s not super dry by any means.

So the SLH in the middle is doing pretty good, leaves are pretty healthy.
The PP on the right has been developing light spots, and in one or two places, brown spots. I’m thinking Ca-deficiency possibly? I know a few on here have said it might be needed to supplement, but I was hoping that MC would have enough. Pics below

Then the BCN on the left has some minor light spots starting, but not as bad as PP, but also has some interveinal lightening, maybe Mag/deficiency? Another thing I’ve noticed is that the new growth is twisting quite a bit.

So first I gave them all a Foliar spray with very weak mix of kelp and CalMag.
Now my options are...
1) Plain water like I planned, but for this to be the right choice the leaf issues would have to be due to lockup for it to help

2) Plain water with a dash of CalMag

3) Feed with same MC strength at 300ppm like last week plus a dash of CalMag

4) Feed with a higher MC strength of 500ppm

Could use some opinions @Boognelson87, @pop22, @GeorgeCloney, @elcoloan, @Garage_Grower, @Mañ'O'Green or anyone else who would like to chime in

Thanks!

Side note, my 4x2 MarsHydro tent arrived! Assembly and transfer to come this weekend!

 

[Boognelson87]

All I can say from experience with Mars sp lights and mega crop is. If I don't supplement cal mag with pro mix I got issues. Every single plant.

Three things can cause the drooping I think of of BCN.
1. It's almost lights out time and the plant senses that.
2. There is alot of water at the base of your pot without enough oxygen.

3. The pot is dried and plant is thirsty

However you said it's not completely dry so I would think 1 or 2. Let it dry out at this age. Let the roots get oxygen.

Foliar feeding. What did you PH to? Foliar feeding should be a higher ph than you pro mix feed and should be around lights out time to avoid burn. Not sure what 24/0 folks do

At 31 days of age and a dry pot I'm feeding around 500. These plants can take it. They got the growth and ready to stretch. But If not dry wait. All I can offer hope it helps

Do yourself a favor it helped me. Get a 3 gallon fabric pot like your plants in. Put pro mix in it. Pick up your pot with plant and the new one. If they don't weigh the same don't water.Also can use a scale but I dont have one.

 

[GeorgeCloney]

Too much cal will create a mag def'c.
Too much mag will create a cal def'c...

What ppm have you been feeding the plants.
My first suspicion is you're getting a mag def'c. this been caused by too much calcium.
The purple stems, and your words" new growth curling" ,.. gave it away.

The safest and most bullshit way to clean this up and correct it?
Flush.
But you can do it with 3x your pot volume in MC mix.
@500ppm & 6.2Ph

 

[4d-Rock]

Thanks @Boognelson87 for the input.
i do think that they are getting close to watering, not quite as light as just dry soil.
I’m giving them an extra night and will water tomorrow.

I don’t know much about Foliar and didn’t even think of pH, but it’s probably high 6’s. And I’ve been doing it occasionally during lights on so I guess that’s not ideal.

@GeorgeCloney I don’t know how I’d have an excess of either cal or mag at this point. I’ve only done plain waterings alternating with feeds of only MC say a max strength of 2g/gal or 350 total ppm. No other supplements other than a couple sprays of weak kelp here or there.

Im leaning toward watering with 3g/gal MC and an added 50ppm of CalMagic

 

[GeorgeCloney]

Thanks @Boognelson87 for the input.
i do think that they are getting close to watering, not quite as light as just dry soil.
I’m giving them an extra night and will water tomorrow.

I don’t know much about Foliar and didn’t even think of pH, but it’s probably high 6’s. And I’ve been doing it occasionally during lights on so I guess that’s not ideal.

@GeorgeCloney I don’t know how I’d have an excess of either cal or mag at this point. I’ve only done plain waterings alternating with feeds of only MC say a max strength of 2g/gal or 350 total ppm. No other supplements other than a couple sprays of weak kelp here or there.

Im leaning toward watering with 3g/gal MC and an added 50ppm of CalMagic

I think you have answered your question.
By answering mine.

You have been under feeding , its now clear.

I get nute burn with MC around 700ppm.
At this point your first concern is the calmag, so dose at 70-80ppm and add your MC between 450-500ppm.
Do this for the next 3 feedings and observe damage/progress.
In the future, do not alternate with MC.
Feed low, and constant (450-550ppm).

 

[Boognelson87]

I think you have answered your question.
By answering mine.

You have been under feeding , its now clear.

I get nute burn with MC around 700ppm.
At this point your first concern is the calmag, so dose at 70-80ppm and add your MC between 450-500ppm.
Do this for the next 3 feedings and observe damage/progress.
In the future, do not alternate with MC.
Feed low, and constant (450-550ppm).

Agreed. I have problems with alternating feed and plain water and skipping cal mag. Especially this age.make sure get good runoff this feed too @4d-Rock going into stretch I always water/feed a little extra to make sure going forward ppms are fine.i do 1.5 gallons for 3 gallon fabric with promix before every stretch.roughly day 27-30.