Crowding plants will stunt them eventually. And yes YOU are right , DON'T bury your stems above their original soil line unless the roots have gotten exposed, then just enough to hide the roots. Buy a growers guide when you get a chance so people don't get away with giving you poor advice. An opinion is just that, but a fact is a fact!!!! Jorge Cervantis deals in facts, so does Ed Rosenthal, trust the experts not the know it alls on this site. VERIFY, VERIFY , VERIFY all advice before applying it. Tag sales and flea markets sell old fixtures cheap. Outdoor HPS floodlights can be gotten there for pennies (I always offer a dollar to start) just remove the housing,reflector and be sure you insulate any exposed wires with high temp silicone (non conductive) and never touch lights while on, the ballast ups the voltage, be careful. You can make sheet metal housing out of scrap and relectors that you paint flat white. A little common sense and you can have good lights for now with little expense til you can afford better. Now, this is what I did and had excellent results and is just my opinion, so research and verify before doing anything. get electrical info from the library or internet and scrap sheetmetal from any air conditioning installers junk pile for free. Good luck