i am going to almost the samel identical grow. I am trying to get it all worked out. I have just come back to hydro and am still putting together equipment. But right now I am wondering if I could take these 4 in rockwool blocks thru some veg and then when the roots show out stick them in top of one gallon pots filled with hydrton. Actually I use something better than hydroton I think, it is called recycled tire media mulch and it works like hydrotn, little rubber chips, but no clean up of dust and it is ealy cleanable for the next crop. Judt whack the roots and it all falls out! 10 bucks for a huge bag at home depot. Anway, I am wondering if the cube will dry out? Yours are pretty low and I am wondering if the cube gets wet at all or if it stays dry and the root dont mind? HAve you ever thought of adding more hdrotn as the roots grow and just sorta potting up?