Now i understand your post a little better latewood. You are saying that the toxic salt will stick into the rockwool and even though he changed the solution it will still be bad in the rockwool right?

How would he be able to remove the plants from the current cubes? It seems to me that the roots are all intertwined into the cubes? Any help there would be great! My friend is poor and still has a big ass bag of the grow cubes that ran him 39 bones and would prefer to use them. His mom taught him not to waste So if they could somehow be transplanted into fresh cubes that would be awesome but I dont see how it would work...

Now we have some differing ph opinions...one says 6.8 and 2 say 5.5-5.8....Will 6.8 cause harm? Cause all this basically stated when he was lowering the ph to 5.5...Also all he has is the drop style ph checker and sometimes it can be hard to guess the color accurately. He needs one of those crazy gadgets for sure. Christmas is just around the corner! Oh wait no its not.