Hi man, You got no instructions ? maybe this will help, I run drip and am starting bubblers now. You need to wash the hydrotron expanded clay balls well to get all dust off of them. First you need to decide on a germination plan. You grow soil , do you just plant or do the paper towel thing or what ? More ??? than you wanted. If you go with the rockwool cubes there are propogation stuff for that. Just use the paper towel thing till they sprout. Presoak you cubes in PH balanced water over night. Poke a little hole in the top if it doesn't have one and put a sprout in. I'm shure you get the idea. Place a layer of hydrotron rocks in the bottom of net pots, a lot will fall through that's alright just do it in another container. The big ones will stay. Now put in your cube with sprout. Depends on how big your net pots are , how deep you want the cube to sit. Then fill in with rocks around sides, don't cover the top . You can add more later to help hold up the plant and keep algea off the rockwool. They all need to be the same. put them in unit and fill with PH nutrient water to just touch the bottom of the net pots. To keep the rockwool wet now. As soon as the roots start to go for the water lower the water to just below the net pots so the main root ball does not sit in water. Not good. Bubbles will keep it wet. Now change water every 10 to 14 days. Learn about nutes and add ons. And above all else get a PH meter, no really do it now. PH is king in hydroland. You can get a TDS meter later but get the PH meter. Only use RO or distilled water and then add back what you need. So are you now confused good ?? I was at first but if I can do it you can. You can put the seed right in th rockwool just make shure it stays wet. What kind of light you got ??