Soak them over night in a jug of ph adjusted water..test in the morning to find the ph of the rockwool cubes...the solution in the jug with the cubes in should read between pH 5.6 - pH 6.

Take your seeds now and place them on the cubes and with a knife tip excavate some fibres from the surface of the rockwool , gently and surgicaly bury the seed under the surface . Close it over with some fibres from the surrounding rockwool..The seed should be completely buried but only by a thin layer of rockwool strands.


Keep in a warm place and in a few days you will have seeds sprouting up out of the cube and ready to be moved to the lighted grow area.

Use a "dome" or ..a small plastic tub [like me]

read the instructions on the Super thrive and halve the concentration when germinating seeds
Easy Roller Reviewed by Easy Roller on . Rockwool Germination and Superthrive I got my seeds, I got my propogation dome, I got Grodan A-Okplugs, and I got Superthrive. Got a couple of questions: 1) The Grodan package says all I have to do is soak the cubes briefly in water with juice of a lemon. Is this ok for cannabis? 2) How much water do I put into the tray of the dome? 3) When should I add Superthrive and how much? Rating: 5