Optimum PH for sprouting?

canndo

Well-Known Member
Anyone have any numbers for optimum PH in a sprouting medium? How about advice on initial nutes and ppm for a sprout ? I could use a little input. Thanks.
 

samljer

Well-Known Member
Anyone have any numbers for optimum PH in a sprouting medium? How about advice on initial nutes and ppm for a sprout ? I could use a little input. Thanks.
Ive always just aimed for 6.0 and have been perfectly fine in standard potting soil.
I usually have to adjust it a bit with baking soda or vinegar as it seems the one i like is usually 5.5 (which is probably ok too).
From what I know, soil can be a little bit wider as far as the acceptable ranges and PPM, while hydro is more strict (but easier to adjust) inorite ;)
 

canndo

Well-Known Member
Harrikin. Thank you for your response. At what point will I need nutrients at all? I am looking for two to four leaves after the cotlyodons. and I will have no direct access to the plant after the seed is placed. I will not be able to water it or feed it so I have to put everything the plant may need into the substrate at the very first. I cannot use anything organic or that will decompose at 250 degrees. I figure rock wool is my only alternative but I need to alter the ph,is that correct? Thank you for your help.

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This is as far as these seeds get every time. I need another method.
 

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bamfrivet

Well-Known Member
If where you are growing is going to be 250 degree's you don't need to worry about the PH because your seeds will never sprout and any plant you put in there will die. Usually you don't need to add any nutes or anything for at least 3 - 4 weeks.

Also, to germ my seeds I just put them directly into the soil, or in your case rockwool, and keep the soil warm and moist around the seed. They usually sprout with in a couple days, the longest it's taken me is a week.
 

samljer

Well-Known Member
If those are what i think they are, your burning the tips.
Those gel cups are sold as a rooting medium, they are filled with nutes, hormones, etc.
Germinate your seeds directly in rockwool cubes, using plain water for 3-4 weeks
At that time you can plant your cubes/plants into soil or a hyroponics system.
If using soil, you can go another 2-4 weeks without nutes "depending on its quality, and if it came with extra nutes as some do"
If you go into a hydroponic system, simply start with lite nutes, and increase slowly, keep Ph6 and youll be fine.
Testing PH of soil is done with a probe, or using runoff water (but not the first cup)

I know for 100% certainty that the gel is your culprit if thats what i think it is, ive used them to clone many a times the damey ;)

GL.
 

samljer

Well-Known Member
If where you are growing is going to be 250 degree's you don't need to worry about the PH because your seeds will never sprout and any plant you put in there will die. Usually you don't need to add any nutes or anything for at least 3 - 4 weeks.

Also, to germ my seeds I just put them directly into the soil, or in your case rockwool, and keep the soil warm and moist around the seed. They usually sprout with in a couple days, the longest it's taken me is a week.

I have to agree, ive lost more seeds to paper towel then i care to count, and is for the impatient who just have to "see" the tips lol.
Germination rates are on par or better if just planting as nature intended, and is recommended by 4/5 breeders. Right into the dirt/rockwool.
 

Flo Grow

Well-Known Member
Forget using shitwool aka rockwool.
Have to PH and even then if you do it right it can still cause PH issues.
Use Rapid Rooter plugs instead.
Totally inert coco fiber by-products and not "organic" like you're thinking.
Never have to PH, just moisten with you preferred substrate and plant the seeds or clones.
Even breeders like Subcool use rooter plugs and not shitwool !!

It sounds like you're doing it guerilla style, so you HAVE to add certain things to your planting site.
Go with something that's a mild feeder/week medium, then let it get stronger as it gets deeper so the roots can adjust as they grow into it.
For instance, even Subcool puts his young plants in a milder medium to start sometimes, with his Super Soil at the bottom of the pots.
Again, going from weaker to stronger so the plant doesn't burn.

Good grow vibes to you, Canndo !
And a bountiful harvest !!
 

canndo

Well-Known Member
If where you are growing is going to be 250 degree's you don't need to worry about the PH because your seeds will never sprout and any plant you put in there will die. Usually you don't need to add any nutes or anything for at least 3 - 4 weeks.

Also, to germ my seeds I just put them directly into the soil, or in your case rockwool, and keep the soil warm and moist around the seed. They usually sprout with in a couple days, the longest it's taken me is a week.
You misunderstand.
I must sterilize the growing media and the container at 250 degrees. I do intend to let it cool to something akin to room temperature before I place the seeds. Thanks much for your continuing responses.
 

canndo

Well-Known Member
If those are what i think they are, your burning the tips.
Those gel cups are sold as a rooting medium, they are filled with nutes, hormones, etc.
Germinate your seeds directly in rockwool cubes, using plain water for 3-4 weeks
At that time you can plant your cubes/plants into soil or a hyroponics system.
If using soil, you can go another 2-4 weeks without nutes "depending on its quality, and if it came with extra nutes as some do"
If you go into a hydroponic system, simply start with lite nutes, and increase slowly, keep Ph6 and youll be fine.
Testing PH of soil is done with a probe, or using runoff water (but not the first cup)

I know for 100% certainty that the gel is your culprit if thats what i think it is, ive used them to clone many a times the damey ;)

GL.


Samljer, those are not rooting cups, that is gelzan with sucrose and fundamental minerals.

I do not intend to plant the cubes or even the plants in any system. If I get what you are saying then, I can get to the second or third set of leaves without any nutrient at all? And I do not need to worry about PH in the rockwool? Or do I? 6 is a good number then? If you take a quick look at my grow journal my questions might make more sense. Thanks very much to everyone for their input.
 

canndo

Well-Known Member
Forget using shitwool aka rockwool.
Have to PH and even then if you do it right it can still cause PH issues.
Use Rapid Rooter plugs instead.
Totally inert coco fiber by-products and not "organic" like you're thinking.
Never have to PH, just moisten with you preferred substrate and plant the seeds or clones.
Even breeders like Subcool use rooter plugs and not shitwool !!

It sounds like you're doing it guerilla style, so you HAVE to add certain things to your planting site.
Go with something that's a mild feeder/week medium, then let it get stronger as it gets deeper so the roots can adjust as they grow into it.
For instance, even Subcool puts his young plants in a milder medium to start sometimes, with his Super Soil at the bottom of the pots.
Again, going from weaker to stronger so the plant doesn't burn.

Good grow vibes to you, Canndo !
And a bountiful harvest !!
Flowgrow - thanks but the rooters (I have used them before and intend to do my hardening off in them) will break down at 250 degrees. Nothing is guerilla style, I simply cannot open the container until I am ready to take the primed growing tip. I can not add anything, it has to be fully self contained until it reaches the growth point I am looking for. I am giving up my sucrose route and this is why I have come here where people such as yourself have had far more experience than I in starting seeds. Please, if you would, come visit my grow journal so that you can see what I am up against here.

Thank you as well for your time and kindness.
 

Harrekin

Well-Known Member
Depending on your medium, hydroponics without nutes for 3 weeks sounds like epic fail to me, soil not so much at all depending on how "hot" it is out of the bag.
 

Silky Shagsalot

Well-Known Member
Depending on your medium, hydroponics without nutes for 3 weeks sounds like epic fail to me, soil not so much at all depending on how "hot" it is out of the bag.
i'm a coco grower, which is hydro. i don't feed until around day 11, which is usually when i have 3 alternating internodes. they do fine....:)
 
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