I have had 10 runs on this thing with 99% success. But this last round I got some new foam insert that are much softer than the normal ones. And what seems to be happening is the clones are growing into the foam and stalling. Which doesent happen with the hard ones they just grow down and push the foam aside not grow into it. They have been in there for 2 weeks and I can see little white tips sticking out of the bottom surface of the foam plugs. Like they are full of roots but they won't go down into the water any further. What the fuck is this shit.