Is Rockwool good for starting seeds?
Rockwool cubes are popular for germinating seeds in because of their excellent moisture retention — they are great at helping to keep seeds or seedlings from drying out but don’t let them sit in a waterlogged environment.
When should I feed my rockwool seedlings?
The best time to start feeding seedlings in rockwool is as soon as the roots begin growing. One you see the first set of cotyledon leaves plant emerge from the cube you should provide a light dose.
How do I get rid of Rockwool plants?
Removing rock wool from stem plants is easy and fast — simply cut off the rock wool shortly above the pot with a sharp pair of scissors. Only use the upper part of the stems you have just cut off. In good conditions, the plants will sprout new roots very fast in your tank and anchor themselves in the substrate.
Is Rockwool good insulation?
Mineral Wool Insulation In many ways, mineral wool is a superior insulation product. It has a higher R-value per inch compared to fiberglass, about a 22-37% higher R-value. It contains 70% recycled material, making it a greener product than fiberglass at 20-30% recycled material.
How long can clones stay in Rockwool?
I find that once the rockwool cubes are pre-soaked, their moisture level stays constant for about 5-7 days with the dome in place. Another simple suggestion is to lightly mist the inside of the dome occasionally rather than watering the cube or spraying the clones’ foliage.
How do you kill algae on rockwool?
Mix one part hydrogen peroxide with ten parts water. By adding small amounts to the reservoir frequently, you add a boost of oxygen to the roots and deter the growth of algae.
Is algae on rockwool bad?
Don’t worry too much about it. The algea are not harmful, but they do consume some of the nutrition meant for the plant, so in that sense they are competing with your produce.
Does Rockwool grow mold?
The white substance that you see on your rockwool is a type of mold. It is not harmful when on the rock wool, but you will want to treat it to prevent it spreading to the leaves or other plants.
Do I need a vapor barrier with Rockwool?
And by the way, if you’re remodeling a shower and use Rockwool with KERDI-BOARD or Wedi’s shower system there’s no need for a vapor barrier.
Do you need a vapor barrier with Rockwool insulation?
Note that rock-wool insulation only comes un-faced, meaning there’s no kraft-paper or foil barrier. Depending on the situation, you may need to install an independent permeable membrane to serve as a vapor barrier.
How dangerous is vermiculite insulation?
If vermiculite is disturbed, it could cause tiny, needle-like asbestos fibers to become airborne. Asbestos in the air can be inhaled and cause lung damage. If asbestos is not in the air, it is not dangerous to your lungs.