Help

Iv chucked myself in the deep end and im sinking plants wilting , look ill iv grown from seeds germination not a prob. Strugling to keep them alive in roockwool .about 3 inches tall 3 days old .how wet does rw need to be do i need nutes or to early when should i put in bubbler .i must be coluor blind cause i thought my fingers were green

Should already have the bubbler in your res cuz you dripping them or flooding them? No nutes first week or two then start out at about half strength you need to make sure your watering cycle is often enough the rockwool stays moist goodluck