Afterwards, growing cubes are either planted
onto rockwool slabs or into your hydroponic system or
other substrate like GreenMix which is a mixture of water
retentive and water repellent rockwool. This gives better
drainage.
Clay pebbles are by far the most popular potting on hydroponic
medium and are used in flood and drain, drip irrigation,
passive systems, even some NFT systems. This medium provides
excellent aeration, superb pH stability and can be re-used.
it can also be mixed with soil to improve aeration and
drainage.
When using rockwool to raise or start
seedlings; make a stock solution using your grow nutrient
or similar to a TDS / CF reading of 10-12 then pH adjust
that stock solution down to 5.5pH. Decant this solution
into a bottle so you can feed this to the rockwool as
and when needed. Shake bottle well before sprinkling.
Do no over soak or let rockwool sit in a puddle of nutrient.
