Thanks for the reply SpaceNeedle. I know what you mean about the trash haul. Root rot is not that much of a problem when using Hydroguard and hygrozyme. The roots always seem to be nice and white when cut down at harvest. The drip system is made for rockwool slabs or the like in size. I can take a picture of it when my lights come on. The slabs have a return connecting into a support pvc pipe which dumps back into the res. The openings are just the right size for the hydroton to escape and dump down into the return pvc pipe. They make coco slabs as well. I will post a pic in a few.