newbie bubbler question?????

should the water be touching the bottom of my pots or should the water level be lower.. i about to put my seedlings in

The water should be below the bottom of the cups and the distance should whatever it takes so that the cube is staying wet enough but not too wet. You should experiment and find that level, maybe add stones and a bigger air pump. I'm assuming you don't have a drip or other system and are relying on the bubble action.

i have hydroton filling about 2" deep below my rockwool ..with the water submerging about an inch of that is this ok???