What does the package say. I read alot of people like to soak them for 24 hours however what I bought online says there is no need for long pre-soak. Have not had success yet in rockwool, soon I promise. You surely want to submerge it in water until it doesnt bubble.
ok well i drenched them in water with a few ml of thrive(all purp fertalizer) and popped the clones in, gave the leaves a spray and put a dome on top.
ill keep spraying (2-3 times a day) and should have some roots come through soon enough ay?