I absolutely love the set up spy. The double chilled Techs 
… very informative my man love it! These two will be monsters I know it!
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I use a KISS method, soak rock wool cubes in water PH corrected to 5.5 with a dash of H2O2, give them a real good shake to remove excess water then sow the seed directly into the cubes.
As soon as they produce their first two real leaves, it’s into their forever home.
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Hey @StevOz welcome to our room. Thanks for sharing that. I have seen so many try to grow in rock wool cubes and get frustrated and quit.
Have you got a journal going? If so give me a tag if you will. Good luck with everything! 
I can only hope so. They say TW is a stretcher. I’m ready for it.
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Not really running a journal as such, though I have a thread here about my current grow.
Also here is a thread on my first grow…
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That was me for a minute there. Ended up switching back to rockwool, it was user error that made me get grumpy with them.
At the end of the day I bet a lot of people forget to do the PH soak as mentioned, or the shake off/drain off the excess water. It’s easy to drown a seed in too much water or kill something with the rockwool in its natural ph (7-8). Unlike a lot of germ methods, all the care goes into preparing the medium and once it’s properly prepped, it’s fairly simple. I think it’s the perfect analog to coco - can’t just use unbuffered coco with tap water and expect good results.
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I would like to hear how others germinate in hydro
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Here’s my method. I use rockwool cubes with Jack’s nutrients clone mix. 15-6-17. 120 ppm, 500 US scale. I mix with a gallon of RO water and adjust to 5.8-6.0. I soak my cubes for an hour. I also add either a micos or Mammoth P solution. I set them on a paper towel. I don’t want them soaking wet. Then I put them in my dome with a heat mat. 78 degrees Fahrenheit. I germinate with the paper towel method. When the roots are over 1/4" I use a bamboo skewer to poke a small hole in the rockwool cube. Insert seed and pray. Lol. Keep moist with a spray bottle.
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Paper towel method in ziplock with a puff of magic. After tails formed, place 2" RW cubes on plate, run under tap to soak, pour off excess water, let sit half hr. Pour off any remaining water. Use tooth pick to open ho!e in cube. Place rooted seed tail down. Mush hole back together gently, tear corner piece off of cube and place over hole. Move p!ate under germ lights. Heat mat if needed. They live there until a couple sets of true leaves are out then into the system.
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I grew one yes it stretched a lot.
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I’ve seen several here that have had problems with them. I’ve never tried rock wool cubes. I’ve used pete plugs and rr’s. Thanks for shring that! 
Hey brother, welcome to our room. Thanks for sharing that. Good luck and keep’em growin!
Thanks for sharing that @StonedCold13
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Happy cannaversary @TLC !
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Crap! I forgot to mention that as well
Ditto!
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1-20-22
Day 14 since breaking ground.
Girls are growing nicely. I got a little heavy on the water one day since last post, but she seems to have recovered pretty well.
So, in 6 days, I dunked them twice in a batch of nutes. The second time I made a cover to go over the netpot but it was keeping the pellets too moist and within 6 hrs SC began drooping over and started to turn yellow.
I took the plate off so she could dry out and within 24hrs, she started getting her color back and standing up better.
I got them in their totes and now have the auto pilot set…. (Hopefully!)
Tap water PH=7.0, ppm’s=70
I mixed up a batch of nutes for 22 gal.
Armor Si - 1/4 tsp/gal
Part A - 3.69 gr/gal
Epson Salt - 1.2 gr/gal
Part B - 2.44 gr/gal
Hydroguard - 1/2 tsp/gal
After mixing nutes and letting it mix for 2 hrs, PH was 6.8 and ppm’s 960
I added 3 tbs of PH down to the reservoir. An hour later, It brought the PH down to 6.0.
This morning PH is 6.1 and ppm’s are 957
Now if I can keep temps within range, we might have some different smoke in about 4 months.
Strawberry Cough
Train Wreck
Have a great day.
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There off to great start! Looking good buddy! Love the set up 
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Man that’s a clean setup, I love it. Plants looking really good and healthy.
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Your set up is cool TW is rocking rite along
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Whoop woop
And here we go 
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Very curious how the 1/10hp chiller does with 22gal. I have a ~35gal RDWC system and I struggle to keep nutes temp <75F, and I suspect 1/10 would work for me. (But only for now, 'cause I can expand to ~70gal, which would certainly require a 1/4hp)
How’s the chiller working out?
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Thanks brothers for the compliments. I can honestly say, I could not have done all of this without the great folks here. I am humbled.
@Jungle I think it’s (1/10 hp) rated for up to 40 gal, (I think). 70 gal, you’d be better off going with the 1/4 hp IMO.
My 1/10 has no problem keeping temps at 68.
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Truth 
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Very neat, tidy and shiny, looking good, now fill that grow space!.. 
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