My seedlings won't grow

is your rockwool to wet ?

are you feeding them?

no baby spiked leaves yet ? about the size of a pen head growing from the very top of the plant...

If by any chance you haven't fed it yet then that is your problem. And don't let anyone tell you that you don't have to feed them when they are that young cause that's complete bullshit

Hey guys, thanks for responses-
Rockwool is dry by the time I go to re-moisten with few drops.
No I havn't fed, as roots hasn't touched water, none yet(maybe some in wool)
Yes, there is baby spiked leaves since the first night, but havn't grown at all since then

edit: as i check just now, one of them seems to have stretched up, and 2 leaves fell off... The other one is still exact same

Seedling don't need nutes the first week. What type/size of light you using?
Do you presoak your rock wool to 5.5 ph?

Like i said, I havn't used nutrients yet and won't untill it has 2-3 nodes, if they ever do..

I'm using 3 26w CFL's that came with my aerogarden.
I soaked the rockwool in water with ph 6.0 and also let water sit out 24h beforehand

Ok so the only problem could be the pH of rockwool being 1.0 over?? Hard to believe, so should I take my seedlings out and put them in newly soaked ph'd rockwool?...

mrghettogrower said:

seedling don't need nutes the first week. What type/size of light you using?
do you presoak your rock wool to 5.5 ph?

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bullshit!!!!!

and my newborn baby doesn't need food because he is only a week old... right??? I am sooooo sick of people saying that seedlings don't need to be fed and then run into yellowing and other shit. Well don't feed them and your symtoms might not show up right away but you know usually a def won't show until it has been underway for a while.

Listen dude, If you want your plants to grow then you need to FEED THEM

Ok look guys, I came back and saw all these new replies hoping there was some solution, i'm going to asume nobody knows a thing untill I actually hear some advice, please no flaming arguement peen sizing here.

I simply want to know how to fix my babies!!! I also really don't see how putting nutrients in the water inwhich my babies are not even touching could help us, as far as i'm concerned the only reason there's water and airstone pumping air in the res is to keep humidity and oxygen to the bottom untill it grows roots

Feel free to teach me some lessons here about growing with rockwool DWC (aerogarden without drip)

Edit: Also don't mean to come off as agro, but come on now, its the 5th day without any progress and 1 has lost it's leaves. This website is where I learnt a good 50% of what I have from researching about growing, and I decided to post in this particular forum because I lurk people's grow journels here, please give me a reason to stick around

How far away from the plants are your CFLs? That could be a problem, with adequate air circulation you should have em as close as 1" or less even if the lamp is cool to hold (eg. a fan has been directly blowing on it)


I highly doubt its the cause but pHing your rockwool at 6.0 by soaking is a bit high, you should be doing so at around 5.5 or possibly even a bit lower, the pH will rise slowly over a few weeks, but again very unlikely to be the problem.

You should never feed your plant in the FIRST week (the seed has all the energy it needs, etc.), but after around a week of them being above the surface of the rockwool you should be giving them 1/4 strength. You should DEFINITELY NOT wait until the 3rd set of leaves to feed them, that's unnecessary stress and your plant's will probably go yellow as they scream for food .
So in other words, if you havn't fed them yet, and they are i'm assuming around/at least 2 weeks old, you should feed them, and I actually think that might be the cause of your problem.

Otherwise, are you using any additives such as root stimulants (rhizotonic, hygrozyme, etc.)? If not, you should be, I can speak to rhizotonic increasing the root mass tremendously.
I ask though because you can and SHOULD be giving this additive to the plant right from day one (people even put it in the water they soak their seeds in !). These products are just supplemental, they aren't metal salts, aka won't burn your plant's

Are you using RO water? What have you pHed it to?

Only other thing I can think of is air circulation, your temps are fine, but how is air being moved around inside your cab? Do you have an oscillating fan? Is it streaming the intake air over the plants and towards the exhaust?

Thats all I got, hope you figure it out. If its any consolation i'm hitting my head on the same brick wall. Just harvested successfully today, but the seedlings for my next crop i was forced to grow from (long story why I can't grow from clones) are being bitches. 1 day and they all popped, 3 days and they all had roots 1/2-1" out the bottom of the rockwool, transplant into coco .. and now 7 days later they still sit with just one set of serated leaves !

I just finally put a fan in there, oscilating and not directly at the bulb/plant, but there is a hole between the box for air to circulate.

No additives whatsoever yet, let's put it this way, it doesn't even have 1 node. Just couple sets of baby leaves, pulled her up half inch, hopefully her root makes it to the water.

If it fails which I can see it likely happening, i'll get some new aerosponges and try using that again, seems rockwool has room for error

The aerogarden extendable hood is on it's lowest setting, i'm guessing abit further away than the reccomended 2-3"

MrGhettoGrower said:

Wat up max? Take a chill pill you don't have to feed the first week in rock wool the second week or the first watering a week later I feed'em 150-200 ppm.

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Sorry, I just reread that and it sounded kinda mean... my appologies

I always thought you had to feed seedlings as soon as first true leaves start to form, in soil they get the nutrients from the soil, if the rockwool has nutes in then could be ok but if not all seedlings need light nutes as soon as the root develops and first true leaves or so i was told and work off. I have no idea of rockwool grows though. Peace

I just see on here all the time people saying "you don't have to feed seedlings" which I completely disagree with.. GHETTO, sorry man didn't mean to go off on you like that.