Tony69
- 83
- 18
In my opinion, rockwool is still great. I had many failures with it as well. What I can suggest is ignoring what you've learned previously about it. Don't follow the labels instructions. I have used untreated rockwool and treated rockwool. The untreated rockwool caused a lot of burns.
Here are the steps I would take to get 95-100% success rate with rockwool:
1. Do PH adjust to 5.3-5.7
2. Optionally add super thrive and rooting hormones to the water
3. Optionally use rooting hormones... they do help get thicker roots to form.
4. Soak rockwool for 10 minutes max. Make sure it is even. Let all excess water run off. No water should drip from the trays. The netted trays are awesome for this. Just dunk them into the water.
* DO NOT CUT THE LEAVES
The transpiration is what keeps the clones environment humid.
* DO NOT MIST
Misting will cause droplets to form on leaves and stagnant water is not our friend.
5. Use a humidity dome to keep humidity at 95-100% until roots start to form. Then start opening the vents.
I use 1.75" cubes and transplant later, although bigger cubes are easier to work with. Do not over pack your trays, you want some airflow to prevent mold and water droplets sitting.
Daily dump out any excess water that forms on the lid. Rockwool shouldnt be saturated. It should have a light frost look over it from the humidity and should still be semi-light colored. A bit more moisture than that of a rung out spung or a towel once you've dried off your body from a shower. Just make sure to monitor it so that no cubes get too dry either.
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