I would like to germinate seeds directly into rockwool cubes to then go into my dwc. I’ve read through the past threads and here’s my take away. Soak cubes in pH adjusted water for a few hours until they stabilize. Soak seed in 1% h202 for 18 hours. Shake rockwool water out. Put seed in nipple side up into rockwool. Put in a container, keep dark and warm 75f until they pop.
Does that sound right? What do you do?
Yep, that’s the way it’s done. Just don’t let the cube dry out.
I typically just start them in the rockwool cube. Get it moist, tear off a corner of rockwool and stuff it in the pre poked hole, insert seed orientated the correct way, then tear off another corner and lightly cover the hole. Then i put them in sandwich bags slightly propped open with a toothpick stabbed through the top of the bag. Then put it somewhere dark and warm, and wait some days. You can also germinate however you want and moisten the rockwool cube, and gently crack the top of the rockwool cube apart without tearing it in half and tuck the taproot in.
Pen/chopstick is my favorite to put holes in rockwool cubes/make the hole bigger.
I’ve done this a few times:
wet paper towel seeds til showing tail (dvd case on the router is hard to beat)
wet rockwool cube, use pen to poke hole
drop tail down into hole
rip off corner of cube, cover hole
hydroton/clay pebbles 2/3 full in netpot, drop cube, cover with hydroton
I do wet paper towel on the modem/router too in a plastic baggie or on a seedling mat if multiple strains. I honestly don’t remember the last time i seen a cd/dvd case in person.
I used to start them in a paper towel too, then tail first into Rockwool. Saves all that poking about to see if they’ve popped.
Also, after soaking the cubes I would gently squeeze them which gets more water out than shaking and allows some air in.
People only do this because they are impatient and want to see their seeds growing. I personally think its a terrible idea, you are risking breaking the radicle (the “tail”) when you do this. Why risk ruining a seed?
Just plant it, and don’t mess with it. Be patient. It will come up.
If it work it works, i only put seeds in paper towel if they take longer to pop. I just soak them then sow when they start developing a tap root.
Because I’m a small home hobbyist who does this for fun 
I’m a doofus who frequently makes errors (once overtightened the oil drain plug in a motorcycle, stripping it and causing much headache) - but even I have never had a negative affect of “super sowin” or starting seeds with heat and moisture. Never broke a taproot but I have got to put eyes on many 
It’s faster, it has a higher germ rate if you have old or fucked up seeds, you get to see the life more; poppin seeds is a true joy. I’m mostly in coco now so more often just soak in water for a day and drop in a solo but super enjoy “super sowin”. Greatest risk in life is being over-cautious; live a little homie!
Shooww bom cultivo meu nobre
So i know this doesn’t answer you question but I suck at germinating in rockwool and get much better results popping the beans straight into the hydroton
I’ve read about straight into hydroton. Issues that I didn’t know how to solve;
How do you not kill the seedling from the pebbles?
How do you water the thing? Even fully filled with bubbles the top of my hydroton stays dry
I first soak the pebbles in the rez solution in a bucket overnight (or a few hours if I’m feeling impatient)
Next I fill the net pots up half way with pebble.
Then I stick a funnel in the pebbles, half way into the pebbles and drop the seed in.
The bubbles from my airstones cause water to spit off the water surface when when you pour coke into a glass and this is enough to germinate the seeds and enables the tap root to find it’s way into the reservoir. If this isn’t the case in your set-up you can simply manually water every couple of days, just pour it over the pebbles.
As the seedling grows taller I add clay pebbles to fill up the net pot.
Here’s an example:
Thank you for sharing
I’m currently in the "waiting some days’ phase and finding it tough to know what’s going on inside the cube
How long on average after putting the seed in the cube till you start to see growth?
Thanks
3-5 days. You can also just move the sandwich bags right under light, then wait for root to pop out of the rockwool and then into your medium. Just make sure the bag is open a little bit for breathability but not too much so it dries out.
Here is a grow log i did with pictures of the rockwool cube/sandwich bag method i use:
Feel free to ask me anything along the way! I’ll be more than happy to advise. Definitely have a good amount of grows under the belt, and i’ve seen the good, the bad, and the ugly.
