Scrog is just fine. Here is a great example. The same as yours. http://forum.grasscity.com/index.php?/topic/1319001-A-1000-watt-SCRoG
What do you mean ? If I measure ph? Yes, I do, but the seed isn't in the system yet. Still a seed ) I think tomorrow will come out the rockwool
Have a problem with the rockwool , it's almost dry all the time , but today turned green , is that dangerous ?
Yep. Very dangerous. Had a blade on here that had that happen. Turned green then almost purple. Definitely killed the seedling. What did you put the rock wool in? Also can't have it too soaked. I like using rock wool but others hate it. Maybe you should try another alternative. Like soil plugs or peat moss (organic)
The point is that I cannot put it away, because the plan has roots in the water already, and the rockwool is in the middle. Better still to cut it away, right?