Hi Italian
Let clarify my post about rockwool .
Rock wool is unstable when it comes to PH the reson to soak them in water at the corrcet PH is to make them more stable, I soak mine in PH water at about 5.5 to 5.8 overnight and then let the exsess water drian off before use.
Rock wool is a good media for holding moistere so dont over water.
Greenthing Reviewed by Greenthing on . our test run in our DWC are seedlings have just sprouted and we are doing light 18/6 with drip 3 times a day for 15 min with a half strenght nute solution. we are using GH nutes and going by the back of the bottle. so far so good. i will be getting cal mag within the nxt week Rating: 5