light- like dude said above, heat is the biggest issue with young plants/clones....CFLs will be more than enough for your young ones, however it IS possible to have too much light....too much light will bleach the leaves, causing whats called chlorosis, but for this to happen youd about have to have a plant a few inches away from a 600 or 1000w bulb, and even then plant leaves tend to get burned before bleached...
water- bubbleponics is hydro, so assumin you put your plant/medium directly into the res....the roots then grow and get submerged underwater, and will thrive as long as they receive plenty of oxygen via an airstone/bubble bar or h202 supplements (though airpumps are much more effective and efficient)
nutes- again like guy above said, wait for your plants to show deficiencies before addin nutes (youll know it when you see it)....nutes are then kept in the reservoir 24/7, adding more as the plants get older....please note though, start out with about a 1/8th of what the nute bottle recommends and work your way up...my plants, right before harvest, would get nute burned if i even went HALF of the recommended dose, so keep in mind that when growin, LESS IS MORE....I HIGHLY recommend you get a ppm/tds meter, this will save you a whole lot of headache and will make quick work of addin nutes...change the water in ur res at least once every 2 weeks, and you should be good...good luck!